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Questions and Answers About The Hair Drug Test
These are the most frequently asked questions I’ve been asked about the hair drug test by the millions of visitors to this site over the past couple of years.
Hopefully, this page of quick answers will save you time!
If you have other questions you’d like me to answer, drop me a line in the comments section below.
Best of luck on your test!
– Jay Z.
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A hair drug test is a procedure in which a small sample of hair is taken & analyzed to identify drugs used by the person being tested. The sample is sent to an independent lab that analyzes it for traces of specific molecules. A hair follicle drug test lab looks for a minimum threshold, or concentration, of specific trace chemicals in the hair sample. The molecules detected during the test may be the drug itself, or they may be metabolites that are produced when the body processes the drug. Very. Because your hair stores a record of what’s in your blood as it grows, the hair drug screen is far more effective than a urine or blood test for detecting long-term drug use. The length of time the hair follicle test can detect prior use is only limited by the length of your hair. However, most labs only sample 90 days’ worth. Most drugs flush out of your bloodstream within seven days after last use. This is why blood and urine tests are limited in their visibility into your past. Most urine tests cannot detect use more than 48-96 hours in the past, for example. All drugs and drug metabolites are transferred from the bloodstream into your hair by way of the hair follicle, as your hair grows. In some cases, these trace chemicals are also deposited onto the surface of the hair through sweat glands, which are fed by your bloodstream. This is true for marijuana’s metabolite, THC-COOH (delta9-THC-COOH). A standard hair drug screen looks for drug use during the prior 90 days. Some employers and government agencies may order tests that go back 6 or 9 months, but hair tests lose their accuracy beyond 90 days. Longer tests are also more easily challenged due to the effects of weathering and chemicals on hair. The following five classes of drugs are detected in most standard hair drug tests because they are mandated by most Federal Government employers: To take a 90-day sample of head hair, a 1.5-inch lock of hair is cut from your head, from the scalp line outward. The standard GC/ MS confirmation screen calls for sampling 40+ mg of hair, which is about 60 strands. Here’s a video from USDTL that shows how the lab techs take a sample and prepare it for shipment to the lab: On average, human head hair grows about 1/2 inch per month. That said, the history of drug use captured in a standard hair sample can vary by as much as one week either way, depending on hair type. Your ethnicity, hair thickness, and hair color will all impact how many days of history are detectable in the sample. Coarse and curly hair takes more time to grow. For this reason, more than 90 days of drug use may be locked inside a 1.5-inch sample of dark, curly hair. Fair, straight, thin hair grows faster than average. So, less than 90 days of history may be captured in a blonde hair sample. Yes. If you shave your head or are naturally bald, then the sample station will often take a sample of your body hair, instead. This increases your risk of failing, however. That’s because body hair grows considerably slower than head hair. It is tough for a sample station technician to know exactly how much body hair to take. For this reason, body hair samples may reveal up to a year of history. Different technicians and testing labs handle this situation differently. Some technicians are instructed to turn you away, which may be treated as you refusing to take a hair drug test. Some may request urine and/or blood test as a substitute. Most will either sample your body hair as a substitute or accept a less than 1.5″ from your head, depending on how much hair is available on your head. How the test sampler handles this situation ultimately depends on the contract the lab has with the organization that ordered the test. If you haven’t used drugs during the past 100 days (140 days for marijuana), then don’t worry: you’ll probably pass. In this situation, it’s not critical for you to cut your hair before the test, either. That’s because you will grow enough clean hair to sample during that timeframe, and the lab takes the sample from your scalp line out and discards the rest. Ignore those pills, detox drinks, and weird home-grown cleaning remedies. There are only two proven ways to beat a hair drug test if you’ve been using drugs: abstinence, or clean the chemicals from your hair. The best way to pass a hair drug test is really simple: stop using drugs at least 100 days before your test. Then, if you want to eliminate any chance that the lab tech might accidentally sample your older hair, cut the hair on your head down to 1.5″ in length all around your head, right before your test. If you have the time to abstain for 100+ days, then you will pass – regardless of the type of drug you used. That said, there is ONE EXCEPTION to the 100-day rule: marijuana. If you are a heavy/chronic marijuana user, then you’ll need at least 140 days of abstinence before cutting your hair down to 1.5″. This is because it takes about 30 days for marijuana to clear out of your bloodstream. Only marijuana has this issue. If you are a light marijuana user, then you’ll need at least 110 days. If you don’t have the luxury of a 100-140 day advance notice of a hair drug test, and you’re still using, then your best bet is to try and clean your hair. The two most proven ways to strip trace drugs and metabolites from your hair are the Macujo and Jerry G methods. The following article explains everything you need to know about these two cleaning regimens, including the products you’ll need to get and the exacts steps to follow: For just the highlights, click on the infographic below. Enter your email below, and we’ll send you everything on this website in a neatly organized 24-page eBook (.pdf) that you can read later on – or share with others.
What is hair drug testing?
How effective is the hair follicle drug test in detecting past drug usage?
How do drugs get into my hair?
How far back in time does a standard hair follicle test go?
Which drugs can be detected by a hair drug test?
How much hair is sampled for a hair drug test?
How fast does the hair on my head grow?
Can they test my body hair?
What if I’m bald or shave my head?
What if I have long hair and don’t want to cut it?
What’s the most effective way to pass a hair drug test?
Learn how long marijuana stays in your body.
2. Clean Your Hair: Macujo / Jerry G. Methods
See Step-By-Step Instructions for the Macujo & Jerry G Methods.
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A hair drug test is a procedure in which a small sample of hair is taken & analyzed to identify drugs used by the person being tested. The sample is sent to an independent lab that analyzes it for traces of specific molecules.
A hair follicle drug test lab looks for a minimum threshold, or concentration, of specific trace chemicals in the hair sample. The molecules detected during the test may be the drug itself, or they may be metabolites that are produced when the body processes the drug.
Very. Because your hair stores a record of what’s in your blood as it grows, the hair drug screen is far more effective than a urine or blood test for detecting long-term drug use. The length of time the hair follicle test can detect prior use is only limited by the length of your hair. However, most labs only sample 90 days’ worth.
Most drugs flush out of your bloodstream within seven days after last use. This is why blood and urine tests are limited in their visibility into your past. Most urine tests cannot detect use more than 48-96 hours in the past, for example.
All drugs and drug metabolites are transferred from the bloodstream into your hair by way of the hair follicle, as your hair grows. In some cases, these trace chemicals are also deposited onto the surface of the hair through sweat glands, which are fed by your bloodstream. This is true for marijuana’s metabolite, THC-COOH (delta9-THC-COOH).
A standard hair drug screen looks for drug use during the prior 90 days.
Some employers and government agencies may order tests that go back 6 or 9 months, but hair tests lose their accuracy beyond 90 days. Longer tests are also more easily challenged due to the effects of weathering and chemicals on hair.
The following five classes of drugs are detected in most standard hair drug tests because they are mandated by most Federal Government employers:
To take a 90-day sample of head hair, a 1.5-inch lock of hair is cut from your head, from the scalp line outward.
The standard GC/ MS confirmation screen calls for sampling 40+ mg of hair, which is about 60 strands.
Here’s a video from USDTL that shows how the lab techs take a sample and prepare it for shipment to the lab:
On average, human head hair grows about 1/2 inch per month. That said, the history of drug use captured in a standard hair sample can vary by as much as one week either way, depending on hair type. Your ethnicity, hair thickness, and hair color will all impact how many days of history are detectable in the sample.
Coarse and curly hair takes more time to grow. For this reason, more than 90 days of drug use may be locked inside a 1.5-inch sample of dark, curly hair.
Fair, straight, thin hair grows faster than average. So, less than 90 days of history may be captured in a blonde hair sample.
Yes. If you shave your head or are naturally bald, then the sample station will often take a sample of your body hair, instead.
This increases your risk of failing, however. That’s because body hair grows considerably slower than head hair. It is tough for a sample station technician to know exactly how much body hair to take.
For this reason, body hair samples may reveal up to a year of history.
Different technicians and testing labs handle this situation differently. Some technicians are instructed to turn you away, which may be treated as you refusing to take a hair drug test. Some may request urine and/or blood test as a substitute. Most will either sample your body hair as a substitute or accept a less than 1.5″ from your head, depending on how much hair is available on your head.
How the test sampler handles this situation ultimately depends on the contract the lab has with the organization that ordered the test.
If you haven’t used drugs during the past 100 days (140 days for marijuana), then don’t worry: you’ll probably pass. In this situation, it’s not critical for you to cut your hair before the test, either. That’s because you will grow enough clean hair to sample during that timeframe, and the lab takes the sample from your scalp line out and discards the rest.
Ignore those pills, detox drinks, and weird home-grown cleaning remedies.
There are only two proven ways to beat a hair drug test if you’ve been using drugs: abstinence, or clean the chemicals from your hair.
The best way to pass a hair drug test is really simple: stop using drugs at least 100 days before your test.
Then, if you want to eliminate any chance that the lab tech might accidentally sample your older hair, cut the hair on your head down to 1.5″ in length all around your head, right before your test.
If you have the time to abstain for 100+ days, then you will pass – regardless of the type of drug you used.
That said, there is ONE EXCEPTION to the 100-day rule: marijuana.
If you are a heavy/chronic marijuana user, then you’ll need at least 140 days of abstinence before cutting your hair down to 1.5″. This is because it takes about 30 days for marijuana to clear out of your bloodstream. Only marijuana has this issue.
If you are a light marijuana user, then you’ll need at least 110 days.
If you don’t have the luxury of a 100-140 day advance notice of a hair drug test, and you’re still using, then your best bet is to try and clean your hair.
The two most proven ways to strip trace drugs and metabolites from your hair are the Macujo and Jerry G methods. The following article explains everything you need to know about these two cleaning regimens, including the products you’ll need to get and the exacts steps to follow:
For just the highlights, click on the infographic below.
Enter your email below, and we’ll send you everything on this website in a neatly organized 24-page eBook (.pdf) that you can read later on – or share with others.
March 14, 2017 @ 9:20 pm
I’m not a frequent smoker. But i smoked maybe 2 weeks ago like a hit or two amf the time before it was 4 or 5 months before i smoked. I have a hair follicle test within this month or the beginning of next month. Would i be able to pass if i did a detox shampoo once a week up until?
March 15, 2017 @ 4:21 pm
Yes, you should pass if you’ve only smoked once, 2 wks ago, during the past 4-5 months. Probably don’t need detox treatment, either. Good luck!
August 16, 2017 @ 3:31 pm
Did you pass the test.
February 24, 2018 @ 5:39 am
Okay, you might not reply. But long story short, i took 2 hits of meth-from a pipe in January, 2 to 4 hits of meth-from a pipe at the end of February, Could i pass a hair follicle test. Other than that its been 6 months to a year abstinence from all drugs
April 9, 2018 @ 3:40 am
If I used edibles two days in a row just one edible a day like 2 weeks ago will I be able to pass a hair test in 90 days
April 14, 2018 @ 10:50 pm
Yes, you should pass.
May 20, 2018 @ 12:20 am
Hey jay question so I did roughly 500 mg of MDMA a few days ago. I may have a drug hair test next month. I thought about shaving all the hair off my body then let it grow back and shave it all over again. That new hair after 2 shaves should be good right for the test?
May 21, 2018 @ 8:47 pm
No, that’s not how this works. Shaving your hair right after your last dose does NOT make a difference!
For MDMA, you’ll need to wait about 100 days from last use to be ‘guaranteed clean’. Here’s why:
If that was your only use in the past year or so, then you should pass.
June 3, 2018 @ 3:49 am
I’m going to be taking a hair follicle drug test on June 23rd 2018 , last time I smoke I had one joint of weed & was on April 3rd 2018 , I’ve been clean ever since took a urine test & passed. By time I take the test I’ll be 81 days in Of not smoking . Do you think I have a chance of passing even if it’s not 90 days ? Really Need help do you think I should do the Macujo Method ? This drug test is for my dream job smh . Would like if you can reply soon as possible thanks ?
June 6, 2018 @ 8:26 pm
81 days is NOT long enough if your hair is 1.5″ or longer at the time of the test.
1.5″ is the minimum length of hair sample required for a 90-day hair test; if it’s a 180-day test, then your hair needs to be 3″ long.
Your best bet is to try the Macujo or Jerry G cleaning regimen; or, you can cut your hair down to 3/4″ all around your head and hope they accept this short length, or defer you another month to let it grow.
Make sure you shave your armpits, arms and legs right before the test, too.
June 9, 2018 @ 6:56 pm
Hey Jay, I have a quick question… I took a drug test for a new job this month and the last time I smoked I shared a joint with a friend in January. Do you think I will pass? It’s been 145 days or so. I rarely smoke. Please reply!
June 9, 2018 @ 3:31 am
Yes, I would be really surprised if you failed. Let us know!
August 8, 2018 @ 7:30 am
Hi! I am very worried. I quit using drugs year and a half ago. I have 16 inch long hair. The drug was amphetamines.
Am i going to pass the hair drug test?
August 14, 2018 @ 9:34 pm
Don’t worry! You will be fine. The test only looks at hair less than 90 or 180 days old. Here’s how they do this:
The lab tech will cut the sample of hair from your scalp outward – they clip 1.5″ for a 90-day look-back or 3″ for 180 days.
Hair that is older than the look-back window is not sent to the lab – it is supposed be cut from the sample and discarded before mailing.
You may want to make a mental note of how long the strands are after they clip them – so you can argue your case if it comes back positive.
But very few techs make this mistake.
Also, the labs check to make sure the samples are in good shape & the right length before they run the test. They can usually tell which end of your hair is older vs. younger, too.
April 21, 2020 @ 10:32 am
I failed a hair folicle test for marijuana and I do not even smoke at all. I took a test for this company back in feb , urine and hair. Two weeks later I got a call from another job that I already applied for . Took a urine test and passed. I was laid off from there on April 6. I went back to work for the company i had just left. They sent me for a urine test before i went back to rehire. I passed . When I got to their terminal they sent me to renew my physical and take a hair folicle test. That was a tuesday. I was already working and they called me the MRO called me that Friday and informed me that my hair tested positive for marijauna. There’s no arguing with them or the company. The only thing I could do is pay for a split analysis. My sample sent to another lab. I was relieved of duty on the spot. On my way home I contacted several drug testing facilities. One sent me to a collection site where I paid a lot more for another test. I was going out of my mind. I knew I hadn’t done anything. So I am current sitting here waiting on both results. I really feel like the test I took for the company will come back positive again. That will destroy my career. I took the second test for my own piece of mind . To prove to myself if it is in fact in my system. Since last friday i have been in shock and awe. There is a user in my house . He never smokes inside . But i have caught him doing the vape for of using. Could this have caused me to fail my hair test ????
April 27, 2020 @ 5:16 pm
Matthew, it is almost impossible for you to fail a hair drug test for second-hand smoke.
The most likely culprit these days is edibles. Perhaps you’ve indulged in brownies or candies provided by your roommate, but didn’t know what was in them?
Do you use CBD products like CBD oils of any kind? Sometimes, non-FDA-approved products are not made correctly and contain higher-than-listed levels of THC. Some states allow CBD oil, edibles, and other products to have up to 5% of THC.
Have you used synthetic cannabis (Spice, K2, et al) recently? Some synthetic cannabinoids can cause TCH-COOH metabolite levels to spike, mimicking THC.
Other than edibles & other kinds of cannabinoids, there have been scattered reports of false positives coming from the following substances, although research shows these instances are rare:
NSAIDs: ibuprofen [Advil, Motrin, others], naproxen [Aleve, Naprosyn, others], and fenoprofen [Nalfon, others]
efavirenz (Sustiva) – also found in combination HIV meds
pantoprazole (Protonix) and other proton pump inhibitors (PPIs)
Here is an update on false positive research for marijuana drug tests: https://www.practicalpainmanagement.com/resources/diagnostic-tests/false-positive-screen-marijuana
Here is a recent list of all the drugs that are known to cause false positives on a urine drug test: https://www.drugs.com/article/false-positive-drug-tests.html
I sincerely hope this helps you find the source of your problem. Good luck on your job application!
April 7, 2017 @ 5:00 am
if i took a half of a 5mg oxycodone 9 days ago would it show up if i had a hair follicle done today
April 8, 2017 @ 5:47 pm
Interesting question. It will probably not show up, assuming that 5mg is all you’ve ingested during the past ~100 days or so.
June 13, 2017 @ 6:02 pm
My daughter’s father and his girlfriend are constantly passing blood and hair follicle tests. I’ve seen videos and pictures of both of them using how is it possible that they pass when they have to take these tests within hours
June 15, 2017 @ 2:34 pm
For the blood test, simply abstaining for a week or even a few days can clear your blood enough to pass. If they used literally hours before their blood test, then there’s almost no chance they could BOTH pass… unless they somehow corrupted the test lab (bribe, etc.). Never heard of this before, though.
For the hair test, my guess is they are using some version of Macujo or Jerry G method right before the test.
May 15, 2017 @ 12:32 am
I had cocaine 7 weeks ago. About 2 lines, but less than a third of a gram, less than 300mg most likely.
I have never done cocaine before that.
Would I pass a hair drug test if I had to take it tomorrow?
May 16, 2017 @ 3:23 pm
Yes, you probably would pass.
June 10, 2017 @ 5:53 am
I did a bump of cocaine not even a full line about a month ago yesterday I had to take a hair follicle test I’m panicking I haven’t done cocaine since high school except for that little bit will I be okay
June 12, 2017 @ 2:41 pm
I think you’ll pass. Good luck – and let us know!
June 1, 2018 @ 8:31 pm
Did you pass?
December 27, 2018 @ 4:54 am
did you pass?
June 26, 2017 @ 6:50 pm
I promised myself that if I passed I would leave a comment on how I did it. 5’6 woman, 165 lbs. dark brown hair, very thick. Smoked like a toke or two a day for like 4 months. Also did coke on and off during those months, but only like 6 times ($20-40 bags)
Things you need:
Sally’s Beauty store-
Your color hair dye
Brush to put on the bleach and hair dye
Your local grocery store-
Detergent (I used Arm&Hammer Free and clear, their PH is 11, good for opening the follicles)
Baking soda, get a few boxes
T-sal shampoo (generic brand)
Coal Tar shampoo (generic brand)
Clean & Clear Astringent (generic brand, get a few bottles)
Bought the Nexxus Aloe Rid shampoo – yes it was expensive, but worth it.
**Tips- I had 2 brushes for my hair- I would remove the hair from the brush, then boil them for like 20-30 minutes while I was detoxing my hair and then dip them in rubbing alcohol. I also cleaned my shower caps with hot water and then dipped in rubbing alcohol as well. I also used a new towel every single time I rinsed my hair. Yes this seems extensive, but it was worth it.
The steps I took to get negative results.
7 days til court
6/5 bleached hair, washed out, baking soda treatment, washed out and added the tsal shampoo and tar shampoo and let it sit for 30 min. Washed out with toxin shampoo and blow dried. Dyed hair back then washed out with tsal shampoo, toxic shampoo, and arm and hammer laundry detergent 11ph. 6 hours later cleaned hair with toxic shampoo and towel dried. Baking soda for 7 min, rinsed and towel dried, added the astringent and sat for 30 min
Washed hair with toxin shampoo, rinsed, added baking soda paste and topped with astringent and let sit for 30 min, washed out with arm and hammer, tsal, tar, and toxin shampoo. Added vinegar, astringent and let sit for 30 min, washed out with arm and hammer, tsal, tar, and toxin shampoo
6/9- 9am- hot oil treatment, massaged and pulled my hair for 10 minutes
215-330pm repeated above from 6/6
6/10- professional hair detox
6/11- 9-1015am repeated above from 6/6
430-545pm repeated above from 6/6
6/12- court. No court ordered hair test, doing it willingly.
530pm-7pm repeated above from 6/6
6/13- 130pm repeated above from 6/6
745pm- hot oil treatment, massaged and pulled my hair for 30 min
6/14- 12pm bleached hair for 40 min. After I repeated steps from 6/6, redyed hair. Followed instructions on the zydot box. Blow dried my hair. Cut samples of hair and sent it off through hairconfirm.com
6/15- negative results from hairconfirm.com
6/16- went to LabCorp to submit an official hair test.
6/23- passed LabCorp hair test
July 9, 2017 @ 11:35 pm
Had Hair Follicle test done and it came back negative, this after having treated & stripped hair. Dilemma, testing negative is great but not when you SHOULD have a prescription med in your system and it doesn’t show. Now my therapist wants to know why my allowable med is not showing in my system? Therapist wants new test and I need my prescription med to show but not the one I was not permitted to ingest. Question, if I stripped my hair a few days ago, do I need to treat and strip it again for the next test in a few days?
July 10, 2017 @ 4:23 pm
Yes, you should definitely treat/strip your hair once more, right before every test. This way you will clean the new (presumably tainted) hair that’s grown through your scalp, since your last cleaning.
July 10, 2017 @ 7:58 pm
I take my test tomorrow and I’ve smoked only twice within the 90 day window . Last time being 60 days and the time before that 80. About 3 hits each time (weed) . I am an extremely light user . Maybe 5 times a year lol . And to be honest, I don’t know if I smoked correctly because I didn’t get high lol. Do you think I will pass . African American, thick natural hair, 125 lbs. metabolism has slown a little
July 11, 2017 @ 4:21 pm
Yes, I think you’ll pass. Let us know how it turns out!
July 11, 2017 @ 2:33 pm
My husband quit smoking marijuana two weeks ago. He has maybe 3% body fat. He just got sent for a random hair follicle test. Is there any chance he will pass it? I know they say the less body fat you have the quicker it gets out of your system but i don’t see it being out that fast.
July 12, 2017 @ 4:20 pm
There is some truth to the ‘body fat’ impact (that a person with higher body fat will store more THCOOH and take longer to burn it down) … but the effect isn’t nearly as large as you might think.
The same rule of thumb applies to everyone: moderate and frequent users will need 100-120 days of abstinence before a 90-day hair test, to guarantee they pass it.
Best of luck
August 20, 2017 @ 12:52 am
If you haven’t smoked in over 100 days and they test body hair will u still pass
August 23, 2017 @ 9:46 pm
Yes, you should (technically).
But the problem with body hair is that it grows so slowly that the technician sampling your hair can easily cut a wrong-sized sample which goes back far longer than 90 days.
July 22, 2017 @ 5:24 am
I did an 8ball about 70 days ago only on sat and Sunday that’s it. I sweat a lot and work outside. I also drink a lot of water will I pass on Monday
July 23, 2017 @ 2:36 pm
Yeah, I think you’ll pass. Let us know how it goes!
July 23, 2017 @ 7:10 am
can i pass a hair test after being clean 3 weeks, shave my hair and let it grow back out
July 31, 2017 @ 10:46 pm
I did cocaine about a month less than a line. I stopped smoking a month ago I used to smoke 5 times/ week and I did mdma (250mg) days ago. I’ll have a hair test in a month. Do you think that there’s a chance that I’ll pass ?
August 1, 2017 @ 9:51 pm
Not without doing something. Read this.
Best of luck,
August 4, 2017 @ 11:23 am
I took one hit out a bong about 7 weeks ago. Granted this was fairly potent weed. Hadn’t smoked 10 months before that. Hair samples collected were about .5″ long from crown of head. Being I’ve only smoked once in a 200+ day frame and it was 1 hit of high grade weed 7 weeks ago. What is the probability of me passing a follicle test?
August 5, 2017 @ 10:01 pm
Your chances of passing are excellent. Congrats on your graduation!
August 16, 2017 @ 3:34 pm
If I smoked once in June 3rd and have a hair test on the 22nd will I
August 17, 2017 @ 9:51 pm
Yes, you should. Tell us how you did!
August 17, 2017 @ 5:40 pm
I was slipped something at a bar a month ago. I don’t use any kind of drugs what so ever I haven’t smoked weed in 4years I have a hair focilcal test in 2weeks can I pass. I think I was slipped a ecstasy or molly considering the way I felt.
August 17, 2017 @ 9:42 pm
Don’t worry! One use of almost any drug will not cause you to fail a hair drug test.
September 5, 2017 @ 11:39 pm
Please tell me if you think I’ll pass a hair test, not sure exactly when yet, but should be coming soon:
5 days ago took a few hits off the end of a blunt
11 days ago took 2-3 hits off a joint
19 days ago shared a joint with one other person
September 8, 2017 @ 6:25 pm
That’s too much use to fly under the radar, for most people.
You’ll need to abstain for 110 days, then cut your hair down to 1.5″, to pass a 90-day hair test.
If you don’t have that much time, then you may want to try the hair cleaning regimens described on this page: https://hairfollicledrugtest.info/thc-detox-clean-hair-home-remedies/
September 6, 2017 @ 3:54 pm
If i did drugs 1 month ago, then shaved my hair down to a quarter inch one month later knowing i still had 60 days until i had to test, would the drugs show up in the new hair growth
September 8, 2017 @ 6:18 pm
Maybe, maybe not.
Working back from 1/4″ of hair on your head, after 1 month of abstinence…
The oldest hairs on your head started growing 3 weeks ago, or only 1 week after you stopped using.
If you were a heavy THC user prior to this, then NO, your hair is probably NOT clean. Because it takes up to 30 days for THC traces to dissipate from your bloodstream.
If you used another drug that dissipates from blood faster, then it’s possible you will test clean.
Use this chart to determine your risk:
September 8, 2017 @ 11:18 pm
I shared 1 blunt with my wife back in early/mid June. It’s now September. I have a hair follicle test to take for a new job. Prior to smoking the 1 blunt in June, I haven’t smoked since 2014. What’s the chances of passing the test?
September 10, 2017 @ 5:39 pm
Your chances are extremely good that you’ll pass.
September 20, 2017 @ 4:40 am
I smoked a month ago, 3 nights in a row but only took like 2 hits each time, before that two hits within two nights 3 months ago, and before that not for a few months. I have a hair drug test in about a week (still have to set it up). Will I pass?
September 21, 2017 @ 5:57 pm
You’re cutting it close. If it were me, I’d clean/strip my hair as much as possible before the test.
September 25, 2017 @ 8:51 pm
My friend took an adderall 40 mg over a month ago and over 90 days ago at a music festival al took one hit of MJ, adderall over the course of the weekend, 2 lines of coke, and a x tab. Long brown hair they took a foot.
Took the test 3 days ago. Hopefully he will hear nothing
September 28, 2017 @ 9:26 pm
If i smoked marijuana almost 4 weeks ago which will be exactly 4 weeks this monday since the last time i smoked. and I smoked once or twice a day out of a pipe like a hit or two would I be able to pass if I take a drug test on monday coming up? I have already bought the nexxus aloe rid shampoo and washed it four times a day for four days and also used ultra clean shampoo last thursday. the last time i used aloe rid shampoo was tuesday of this week and then i used it last night on wednesdays If I wash my hair 2-3 times a day with aloe rid shampoo from now until monday and use the ultra clean on monday what are my chances of my drug test coming back negative?
October 2, 2017 @ 8:53 pm
How did your test go, Amy? Did you pass?
September 29, 2017 @ 3:46 pm
Is it true that hair tests aren’t very good at picking up infrequent use? In my case, I took aderal about 5 months ago and a small bump of cocaine a month before that. Before those two times I hadn’t done anything for years. I had my hair test yesterday and they had to take it from my armpits unfortunately. What do ya think?
October 1, 2017 @ 8:54 pm
Exactly. The hair test is designed to detect prolonged use of drugs, not a single event.
A single use of one drug over the past 90 days almost never causes a negative (failed test) result.
September 30, 2017 @ 1:23 pm
Will one Ritalin show up on a hair test?
October 9, 2017 @ 8:55 pm
October 3, 2017 @ 1:47 pm
I am looking for feedback based on your knowledge or personal experience. I will provide feedback when I get my results.
I did 3 medium size lines of cocaine, 1 on Friday 09/08 and 2 on Saturday 09/09. I found out on October 2nd I have to get a hair follicle test from my current employer by end of the month (October) – so I have some time. Prior usage was 2 years ago. I just got a test from a local office on my own yesterday, should know something in a couple days. Think I’ll pass? Think I’ll pass the test at end of the month?
October 9, 2017 @ 8:58 pm
You are right on that edge, where you might get lucky and pass or you might not. Usually, just one use in the past 90 days will give you a pass.
But 3 uses in the past 30 days? that’s pushing your luck.
October 3, 2017 @ 8:10 pm
Thank you for this website!
I was taking adderall daily over the summer.
I have not used it in over a month. Is this something they test for with a hair test?
October 9, 2017 @ 9:10 pm
Unfortunately, yes – most hair tests check for traces of amphetamines, and Adderall is an amphetamine (salt).
October 9, 2017 @ 1:26 am
If i been clean for almost 8 months of cocaine and they do a body hair sample like from my legs, will i pass
October 9, 2017 @ 9:03 pm
Yeah, you should be fine.
October 11, 2017 @ 9:14 pm
I did a line of cocaine 2 weeks ago (9/24) and had my hair test Monday (10/9).. I’m freaking out because I don’t think I’m going to pass. I’ve never done cocaine before and I haven’t done any other drugs since college (4 years ago). Everything I’ve read said a single use SHOULDN’T show up in a hair drug test and that most of the drug is excreted through your urine. Is this true? Will I pass?
I also read that the drug doesn’t get deposited into every hair follicle, just some. Is this true?
October 11, 2017 @ 9:30 pm
Oh also, my hair test went thru Psychemedics and I heard theirs is the hardest to pass.
January 26, 2018 @ 3:26 pm
How did it go? I have a test thru Psychemedics also.
October 12, 2017 @ 7:25 pm
That’s right – a single use in the past 100 or so days shouldn’t register on a hair drug test (90 day).
October 25, 2017 @ 10:04 pm
I have a hair test in 3 weeks and I’ve been clean for 5 months. I want to shave my body before the test. But I only have about an inch of hair. Will that much hair be a cause for concern?
October 28, 2017 @ 7:15 pm
One inch is usually OK. I seriously doubt they will fail you over that. Might ask you to come back in 30 days, though.
October 29, 2017 @ 6:49 am
What is the best hair follicle testing company? I’d like to show my STB ex-wife’s drug history going back years, her hair is REALLY long and rarely washes it (1x [email protected])
can I go back when my son was born/pregnancy? She was using Meth/Opiates who knows what else, just need a way to prove it… Any way I could know how to get a company to test for that amount of time?
November 2, 2017 @ 9:06 am
Psychmedics is widely considered the gold standard in hair drug testing labs.
October 29, 2017 @ 9:52 pm
I took maybe 6 hits off a bowl about 2 weeks ago and I may have a hair test coming up in a week or two is it possible for me to pass? I have not smoked since and before that the last time was June 28th
November 2, 2017 @ 9:04 am
Yes I think you will pass. That’s not much use.
November 3, 2017 @ 3:53 am
Hi! I’m a frequent smoker! About a quarter or two a week. Did a little partying about 2 months ago ( a pretty good amount of meth lol) took a few benzos like a month ago. I’ve been clean the last 15 days and I have washed my hair about 20 times with old style Aloe Rid the last 2 days my test is in the morning and I will also wash with Zydot ultra clean before the test. What are the chances of me passing?? I’m extremely nervous. Thanks!!!!
November 8, 2017 @ 6:55 pm
It’s hard to say – the Macujo and Jerry G cleaning regimens def. HELP, but they aren’t foolproof.
Let us know how your test went!
May 21, 2018 @ 5:14 am
Did you pass your hair follicle test Oct 2017?
November 3, 2017 @ 9:38 am
I took 1 tiny line on the 28th of October and 1 full gram of cocaine and smoked 4 blunts on the first of November i have a hair test in 2 months do you think i will pass prior use was 6 months ago please let me know
November 8, 2017 @ 6:53 pm
You are at risk of failing. Might want to consider cleaning/stripping your hair.
November 3, 2017 @ 3:48 pm
I smoked weed but two hits that’s it for 2 days. So 4 hits in total within the two days but from a small pipe and they were small hits. This was 2 weeks ago and I have a hair follicle coming up in about two weeks. Will I pass? And the last time I smoked weed was 2 years ago and I go to the gym everyday and smoke cigarettes everyday too. And I do scaffolding so it’s lots of sweating and labor it that has to do with anything.
November 4, 2017 @ 6:52 pm
Mario, yes I think you are safe. Good luck on your test!
November 5, 2017 @ 4:56 am
For a pre employment hair test. I’ve been clean over two months. My hair is always about an inch to an inch and a quarter. Will they still take hair from my head?
November 8, 2017 @ 6:51 pm
Yes, they will probably still take hair from your head. But they may also sample your body hair.
November 6, 2017 @ 2:47 am
Snorted about 1.5 pills of 20 xr adderall in August, and then had 2 pills later in August and another 3 pills in September for studying purposes. Smoked on and off in August and September but did not smoke very much when I did. With all this in mind would I pass a test in the next couple weeks?
November 8, 2017 @ 6:49 pm
I doubt you will pass a hair test, with that much use. Sorry.
November 7, 2017 @ 3:51 am
I did about a gram of coke in one night about a week ago. I am expected to have a hair test within the 90 day period. I have never done coke before. Should I be worried?
November 8, 2017 @ 6:45 pm
No, I wouldn’t be too worried. Good luck on your test!
November 16, 2017 @ 10:58 pm
I had a girls night out/bachelorette party with some friends what we are all laughing about calling it The hangover. Let’s just say I don’t remember half the night after beer number 10. But from my understanding we did some cocaine maybe a couple lines. Possible a grams worth. Can’t say for sure because no one really remembers. That was on October 21st. Now my job just announced due to new company policy they are going to be requiring hair follicle and everyone is going to have to go take one in the next week or two. It’s bearly been a month I could really use some insight??
November 18, 2017 @ 10:37 pm
I think you can relax. One bad night almost never causes someone to fail.
November 25, 2017 @ 6:11 pm
I’m going to take w hair test around then end of June 2018 it is now November of 2017 I did some meth 3 days ago just a little line do you think I will pass?
November 27, 2017 @ 10:29 pm
Yes, you should be OK.
November 29, 2017 @ 2:27 am
Does the body hair have to be 1.5” in length too?
December 1, 2017 @ 10:27 pm
No, not the same. Body hair grows a LOT slower than your head hair.
1/2″ of body hair could contain a year’s worth of drug use history.
December 2, 2017 @ 11:56 am
I was a pretty frequent marij smoker but have been clean for four months. Should i be worried about a hair test in 2-3 weeks? should i shave my facial hair its pretty long?
December 5, 2017 @ 10:16 pm
Yes, shaving your facial hair is definitely a good idea, especially if you keep your hair shorter than 2″.
December 8, 2017 @ 4:27 pm
I have more of a question. Does hair follicle tests detect K2(synthetic canneboids)? I’m in a fight to get my daughter back but dcfs or their lab keeps telling me that my results from all the test I’ve done has been positive for K2. I know these tests are lies because I haven’t smoked since the end of September 2017 so I am waiting for myself to hit the 90 day clean mark to have a hair follicle done to prove my innocence over dcfs lies. If they do detect K2,how long should I wait to take one,how long to they take to come back,and how many strands of hair would the tester need? Can they pluck it from the root?Because that’s what I would like.
December 18, 2017 @ 10:04 pm
No, most hair follicle tests cannot (yet) detect use of K2/Spice/synthetic cannabinoids.
Synthetic marijuana is really hard to test for because it’s not just one chemical – it’s literally hundreds of different cannabinoid molecules, custom-made by Chinese basement labs – and each one metabolizes differently in your body.
December 11, 2017 @ 6:46 am
If I had a couple of small bumps of coke in early December with no prior use anytime before that, will I show positive to a hair test done in late January?
December 18, 2017 @ 10:01 pm
Yes, you will probably be OK.
December 12, 2017 @ 11:43 pm
I smoked a few hits of weed ( probably 3 hits) during a single event 108 days ago Aug 30. Nothing since then. I have not done any drugs of any kind for 108 days.
Prior to that, during a 5 day vacation July 27th -30th I smoked weed several times during the evenings. That was 134-137 days ago. Probably 20 hits total during the vacation.
Prior to that (late june) I smoked a similar amount as above with the addition of probably 6 adderall over the course of 10 days. That was 170-180 days ago.
Nothing prior to that until a bit of weed in February.
Have a hair Follicle test coming up very soon. Slim build, eat right, fair hair
December 18, 2017 @ 9:59 pm
Bill, I think you will pass. If I were really worried, I would get a nice short haircut before the test – cut it down to <1.5", all around.
December 13, 2017 @ 2:30 am
If I haven’t smoked in at least 7-8 years but took 3-4 puff off a blunt 29 days ago and haven’t touched anything since, would I pass the Hair Drug Test???
December 18, 2017 @ 9:57 pm
Yes, you probably will pass.
April 14, 2020 @ 9:56 pm
Did you pass????
December 13, 2017 @ 9:10 pm
Ive taken oxy for the last six months no chance huh
December 18, 2017 @ 9:54 pm
Probably not. Sorry. 🙁
Interested in feedback
December 14, 2017 @ 2:33 am
I was a moderate herb smoker about a joint a day..i quit the beginning of September but smoked half a joint on halloween and have been clean since then. I had an interveiw and pretty sure i got the job. If I have to take a hair follicle test say the 1st of Jan. Do you think I have a chance of passing. I have curly black hair so im a bit concerned. Ive passed a labcorp urine test for another job the month before.
Thnx for the any feedback.
December 18, 2017 @ 9:54 pm
You are right on the edge.
As long as the lab tech cuts your hair sample correctly – they are supposed to take 1.5″, from the scalp outward – then you should be fine.
But black curly hair tends to grow slower, so 1.5″ could still contain traces.
If I were you, I’d consider cutting your hair down to 1″ all around if you can, a few days before the test (dunno if you are female or male).
December 16, 2017 @ 4:38 am
I was a heavy daily smoker for like 3 years and I just quit a little over 2 months ago, I have a pre employment follicle test January 3rd. If I use the old formula of the aloe rid and cut my hair down to 1 inch maybe shorter. Should I pass if I stay on top of the old aloe rid formula and then use the ultra clean the day of the test?
December 18, 2017 @ 9:33 pm
No guarantees, but yeah, that’s the idea. But sure you do the entire Macujo treatment, according to these instructions.
December 16, 2017 @ 7:33 pm
I did a gram and a half November 20th but did 1 line on October 20 before that and have a hair test coming up 23 of January will I pass
December 18, 2017 @ 9:30 pm
You’re probably safe.
Anne Just Wants a Job
December 17, 2017 @ 5:01 am
I hit some potent dabs two months ago almost exactly, and took one Ritalin during finals last week. I’ve got less than two weeks for my hair test for a really prestigious internship. Do you think I’m okay? Thank you in advance.
December 18, 2017 @ 9:26 pm
Yes, I think you are good to go. Good luck on the internship 🙂
December 20, 2017 @ 6:37 pm
Did a few hits off a bowl on November 4th on a camping trip, I have to get a hair test in 2 weeks, trying to get a once in a lifetime co-op opportunity. That’s the only time I’ve smoked in the past 90 days and I maybe smoked once every two months before so I’ve always been a very light smoker (btw I have a very high metabolism). Thinking about a haircut and using a couple Macujo products…what’s your thoughts Jay Z?
December 22, 2017 @ 10:04 pm
Relax – 90% sure you’ll test negative. Best of luck!
December 22, 2017 @ 7:26 pm
I just took my hair test December 2017 and the person took about 1.5-2 inches of my hair. She said the hair test should go back a month, I am reading this and this says 3-4 months. I am not a frequent marijuana smoker, I have done so a few times in May 2017 and once in July 2017. Maybe I am being paranoid, will I pass?
December 23, 2017 @ 10:13 pm
Don’t worry – 2 reasons:
a) if your test order says “30 days”, then it’s for 30 days. Some tests don’t look back the typical 90 days.
b) you’re probably way past the cutoff date to test positive (May-June is >110 days)… and you didn’t do that much anyway.
January 16, 2018 @ 11:46 pm
Hello, I smoked weed every other weekend between August 4th-November 12th. November 12th being the last day I’ve done any type of drug. I have a hair follicle test coming up between this week or next week and I’ve very scared I won’t pass! Am I safe?
January 18, 2018 @ 11:43 am
You are probably NOT safe. If I were you, I’d use a cleaning regimen – pronto.
January 17, 2018 @ 12:36 pm
I will have a hair follicle test for an internship. I’m not doing drugs but I’m currently in an environment where people are taking cocaine. Is it possible, that the test will show a positive result, because of contact to people taking it? For example because I was kissing someone or been drinking out of the same bottle?
January 18, 2018 @ 11:47 am
NO – you can’t test positive on a hair test due to second-hand use of cocaine. So you can relax!
January 17, 2018 @ 4:31 pm
If I were to smoke weed today from a bong, would I be caught in my hair drug test tomorrow? I’ve been clean for 153 days and gotten at least 3 haircuts since then. Could I be caught tomorrow if I smoke a little bit today?
January 18, 2018 @ 11:50 am
NO, you should be good. It takes 5+ days for THC traces to get from a bong into your hair – it’s first gotta metabolize in your blood, then your hair needs to grow through your scalp.
January 19, 2018 @ 12:26 pm
I have a hair follicle test coming up somewhere in the next 5 months. As soon as I heard about it I stopped smoking. How long should I wait before I cut my hair to make sure my sample will be clean? Failing is not a option.
January 23, 2018 @ 10:52 pm
Since you have the luxury of time, I’d wait until 120 days after your last use. Then, cut your hair down to 1.5″. After that, you’re hair will test clean.
January 31, 2018 @ 6:15 am
Hello, I have some hypothetical situation questions. If you are consuming any of the major 5 panel drugs that are tested for, and completely stop for 24 hours, then shave your head and/or body hair. Will the new hair that grows be clean? Or do you have to wait 90 days or whatever the appropriate amount of days, then shave your head and or body hair, and then that new hair growth will be clean? I guess I’m confused as to how that would work.
February 3, 2018 @ 3:02 am
Look at it this way: hair starts to grow in the hair follicle about 5 days before it pokes through your scalp line.
So, if you quit today you still have 5 days of drug-tainted hair on its way to your scalp.
That’s why you need to strip your hair right up to the day of the test.
Paranoid and anxious
January 31, 2018 @ 4:08 pm
Please help!! Dec 29th I was invited to a party. A lot of people were smoking weed. It was in an apartment building windows were shut I stayed for about 30 minutes. The smoke was hazy but not thick to the point were I needed to wear goggles. I took a urine test Jan 15th and the 29th both results came back negative. I tired weed one time about 6 years ago. Will the second hand smoke cause me to fail a hair follicle test? I took the test Jan 29th. With the pyschemedics.
February 3, 2018 @ 3:03 am
Relax – you aren’t going to fail a hair test due to second hand smoke. That’s a complete myth.
February 6, 2018 @ 2:03 pm
I have been clean for 5 months but shared a small joint 5 weeks ago and shared half a blunt 3 weeks ago. My 5 panel hair test is tomorrow…should I be ok?
February 6, 2018 @ 4:08 pm
Yes, you should be OK. Let us know how it turned out.
February 14, 2018 @ 12:56 am
I recently bleached my hair blonde and put a red dye in it, in addition to doing the Marujo method. I have about 4 days until my hair test, but I am going to repeat the macujo method about 7 times beforehand. Will they take body hair instead if they see that I have lightened/colored my hair?
February 16, 2018 @ 11:17 pm
Yes, it is always possible they will do that if they see your hair is dyed.
February 14, 2018 @ 7:16 pm
Ok so in the past year and a half to 2 years I haven’t smoked at all. A week or 2 ago I smoked 2 times in 2 different days. The first time it was many hits but I probably didn’t even do it right until the very last hit. The second time just one big hit. What are my chances of passing?
February 16, 2018 @ 11:16 pm
You’ll probably pass, no problem. That’s not enough regular use to register on a hair test.
February 19, 2018 @ 6:31 pm
If you consume coke once and have a drug test 40 days later (hair) will it show up. Haven’t consumed any other drug in a year and a half.
February 20, 2018 @ 9:18 pm
No, you should be fine / should pass the test. It’s designed to detect long-term use, not one-time use.
February 23, 2018 @ 2:44 am
Is lsd detectable If used months ago?
Would a few hits of a dab pen in one night 61 days ago, and 106 days prior smoking bud show? The email for the test says nothing about what kind of test it is but it says do not wear cologne/perfume, does this mean hair follicle test?
February 24, 2018 @ 9:22 pm
Sounds like a hair test to me. Two uses of cannabis will not cause you to fail a hair test. Very likely you will pass.
Regarding LSD, one prior dose should not show up, either.
February 26, 2018 @ 11:59 pm
I’ve been clean now since October 31 hollaween I only smoked weed but I did smoke everyday for years so it’s been about 120 days clean I have a hair follicle test coming up next week I have cut my hair every 2 weeks since being clean and let it grow its about 1 inch long now what u think my odds are on passing
April 23, 2018 @ 9:28 pm
I think your odds of passing are excellent – let us know how it turned out!
February 27, 2018 @ 3:02 pm
I gummed a small amout of coke twice, I have a hair test for a job. Wondering if I’m safe. Been clean from all drugs for 4 months besides the gumming of the coke.
February 28, 2018 @ 9:30 pm
You will likely pass your test. Good luck 😉
February 28, 2018 @ 11:34 pm
I Used to be a very heavy smoker for years, stopped using for 45 days, took a hair folicle test and failed. Smoked about 2 grams after the test in a week’s time and haven’t smoked since. It’s been 168 days now and I take another test on Monday, should I pass?
March 3, 2018 @ 9:33 pm
You should test clean. I’d be really surprised if you don’t.
March 5, 2018 @ 3:52 pm
I was told I would have to take a hair drug test for my internship this upcoming summer. I stopped smoking the day I was told, approximately 14 days ago and still have about 65 days till the test. I am a very frequent smoker (3-5 times a day at minimum I would say) I bleached my hair about 6 days ago and had it cut extremely short right after that. My hair grows very fast I usually get a haircut once a month down to size 1 and 2 trimmers all around the head and it will be approximately 2-3inches long the next time I go in for a cut about a month later. I know this doesn’t matter most of the time but I am 6foot4inches and weigh 150 lbs. I have almost no body fat and a fast metabolism, once again I know that doesn’t do much just wanted to add it in. I plan on using a mix of the jerry g method and macujo method(without the aloe rid shampoo) the week or two leading up to the test. What are my chances of passing this test and are there any suggestions of other things I should do to up my chances. I was told I needed to stop for at minimum 90 days but I wasn’t given that luxury of knowing that far ahead of time. I quit the second I knew it was a hair test and haven’t had any since then.
March 9, 2018 @ 9:41 pm
If I were you, I would wait until the week of your hair test to bleach and strip your hair. Several times. I don’t think Macujo works without Aloe Rid, but I totally understand the cost issue. Do what you can.
I say this because with less than 80 days separating your last use and the test, you will still have tainted hair growing through your scalp all the way up until the day of your test.
March 5, 2018 @ 10:42 pm
My husband has a pre-employment hair test that he just took and is very nervous. He thought he was going to have a urine test. Well, he did maybe 1/2 gram on New Year’s and then about 4 bumps a few days later. He rarely ever does this…hadn’t done it in about 5 months. He doesn’t do anything else and just those times. They took leg hair. What do you think his chances of passing are?
March 9, 2018 @ 9:47 pm
I think his chances of passing are very good. That’s not a lot of drug use.
July 5, 2020 @ 4:38 am
If i use a hair shampoo to rid my hair of any drug does it come up on the test as “altered”
July 11, 2020 @ 6:42 pm
No, it doesn’t. If you bleach it or use hard chemicals, it might.
March 13, 2018 @ 2:56 am
Help! I have to take a hair follice test tomorrow. I have not ingested any drugs bit I have been in the car with people smoking coke and heroin on more then a few occasions. They blew the smoke out the window, but do I need to worry? I don’t know if it got to my hair as second hand smoke. Is that possible? If it is what do I do?!?
March 13, 2018 @ 10:06 pm
Don’t panic! There is NO WAY second hand smoke can taint your hair enough to fail a hair drug test.
That’s a myth.
March 23, 2018 @ 7:18 pm
I split a joint with 2 other people on March 2nd. I am not a regular user at all and that’s the only time I’ve smoked in the past few months. I found out that I have a hair test sometime in April for my new job. Should I take the steps to prevent it from showing up or should I be good? I’m freaking out!
March 28, 2018 @ 10:31 pm
Save your money and your scalp – you should test clean. 🙂
April 2, 2018 @ 12:58 pm
Hi, I’m not a regular smoker (tried four years ago, didn’t work for me) but I had a joint 8 days ago and another yesterday, so all up two in a week. I didn’t even feel anything. Will I pass a hair (and urine) test in 1-2 months time? Thanks
PS. does losing weight help for the urine test?
April 4, 2018 @ 10:47 pm
I would be shocked if you didn’t pass a hair drug test.
Re. urine test: losing body fat might give you a really, really minor edge.
April 9, 2018 @ 5:19 pm
My husband is a recovering addict, crank crack, etc. He has a hair folicle test and he shaved his head after I told him not to, now they took hair from his under arm, he has been sober for 150 days what are our chances of passing the test?
April 13, 2018 @ 10:53 pm
It’s hard to say, because I don’t know how long his underarm hair is nor how far back the test will go. Body hair grows a LOT slower than head hair, so it stores a longer history of use. If he hasn’t trimmed under there since quitting, then yes, there’s a chance he will fail. Sorry to tell you that. Good luck.
April 23, 2018 @ 6:23 pm
Never smoked in my life but A month ago I had a 1/4 of a low dose gummy and a 1/2 of the same stuff the next day. I have a hair test coming in the next week or so. What are my chances of being clean on my test?
April 23, 2018 @ 11:13 pm
Your chances of passing a hair test are excellent. Good luck!
May 15, 2018 @ 5:16 am
I smoked everyday for about 2 months, last being on March 26th, I may smoke 1 blunt on May 18th, how long will it take to pass marijuana hair test? Will probably be around August 22nd. 22y/o male good shape and blonde straight hair
May 18, 2018 @ 9:06 pm
If your test is Aug 22, then you are cutting it close… I wouldn’t feel comfortable going into the test without doing something to strip my hair (if it were me).
April 27, 2018 @ 2:41 pm
Hi Jay, I probably took 3mg of Adderall on 4-14, and then took my test on 4-26. Up to that point, I hadn’t done any drugs for 8 months. Chances of passing? Stupid me didn’t think adderall would be checked for on a drug test, but boy was I wrong.
April 30, 2018 @ 9:30 pm
I would be REALLY surprised if one 3mg dose would cause you to fail. Good luck on your test!
April 29, 2018 @ 1:10 am
About a month ago I took a couple hits of a blunt two days in a row. I rarely smoke so it’s not something commonly done. I have to take a hair drug test this week coming up. Would I still be able to pass it?
April 30, 2018 @ 9:29 pm
Yes, I would be surprised if you do not pass.
April 30, 2018 @ 3:59 am
I recently ate a 5mg gummie on 4/13. The wknd before that I took one hit off a pipe and sometime in late March I took one hit off a pipe. I have been clean since 2009 ish and have a follicle test this week. What are my odds of passing. I really only took one hit the two times I smoked.
May 1, 2018 @ 9:27 pm
Your odds of passing are excellent.
May 4, 2018 @ 8:38 pm
Let me preface by saying thank you from everybody who uses your website here. Now for a question of my own. I know you’ve posted multiple times that a single use will not show up on a hair test, yet here I am! I took one off brand 15mg Adderall XR approximately 60 days prior to having a hair test. What are the odds I pass?
Thanks in advance.
May 9, 2018 @ 9:22 pm
Your odds are the same as for the others: very good that you will pass. Best of luck on your test 😉
May 11, 2018 @ 1:37 pm
hi i am a 30 year old woman with extremely thick curly coarse hair. I smoked and snorted meth everyday for 9 years- probably at least a gram a day. 11 months ago I fond out I was pregnant and immediately stopped. My son is now 4 months old and i am going through custody court with the father. I volunteered to take hair follicle because I know I haven’t touched any drugs for 11 months. The only substance I figured the test would show positive for was opiates due to the percocets I was prescribed after my c section. When I received the results the test showed negative for everything except meth. I was floored and immediately went and took another hair follicle at a different lab testing facility. And once again test negative for everything except positive for meth. I know my hair grows slower than if I had non coarse straight hair- could this be why my results are wrong?
May 12, 2018 @ 9:14 pm
Because this was a custody test, I’m thinking the problem here is that the look-back period was one year (instead of 90-180 days which is a more common for employment tests), in which case you should have failed based on what you just said.
And, yes, coarse/dark/curly hair grows more slowly than other types of hair, and it stores more metabolite per mm of hair sample. This could have hurt you, as well.
May 13, 2018 @ 11:20 pm
Please help. Im nervous as hell lol
May 16, 2018 @ 8:53 am
Took about 9-10 hits of marijuana blunt a month ago on april 11th and took about 6-7 hits two days after. Pretty strong weed. But before April 11th the last time I smoked was almost exactly a year ago around April 2017, and around that time I smoked about once a week or so for about 3 months. Active and athletic person and have been working out/cardio more than average sweating and taking biotin for a few weeks. Thin brown hair. Fast metabolism. Am I good if I have to take a hair test a few weeks from now, I’d appreciate an answer. And I was looking at recent articles on how biotin can disrupt hair results in a negative way, do you know if this is true?
May 18, 2018 @ 9:03 pm
I think you will pass your test due to low amount of use.
On the other subject – I did some research about Biotin; the short answer is YES, using Biotin may cause a false negative on a hair drug test.
Make sure you mention your use of biotin to the lab tech when you take your test – and make sure she writes a note down about it, for your records.
May 17, 2018 @ 3:27 am
Hey man. I quit smoking two weeks ago. I was a moderate user (1/8/wk on average between the wife and I) and I know I’ll probably have to take a hair test around September. I cut my hair yesterday to the scalp and will do it again in about two weeks. Just wondering how much I should worry seeing that my hair grows relatively fast. Cant wait until we don’t have to worry about these invasive tests lol.
May 21, 2018 @ 8:53 pm
I think you are all set to pass the test:
Because you waited 2 weeks after your last use before cutting your hair, your hair follicles had a chance to detox – so the hair growing through your scalp right now and since your hair cut/shave is probably all clean. You also have plenty enough time before your next test (Sept.) to grow 1.5″ of clean sample length.
May 22, 2018 @ 4:03 am
So about 32 days ago I took one hit from a blunt and I just did a hair follicle test today. I am not a regular smoker, that was only one it in maybe 8 month. What is the likely hood of me passing?
May 25, 2018 @ 8:30 pm
You have a very good chance of passing.
May 31, 2018 @ 9:27 pm
I have a hair test next Friday. The day of the test it will be 33 days since I hit a tiny key of coke. Before that it had been about a year. What is my possibility of passing?
June 6, 2018 @ 8:29 pm
Pretty good chance you will pass – that’s a small amount of use.
June 1, 2018 @ 12:50 pm
Used to be a game at smoker, but slowed down a lot since this last January. I smoked about an eighth 90-93 (somewhere in that range) days ago, and am expected to take a follicle test June 4th. I have curly hair, but not very thick. Should I be worried?
June 6, 2018 @ 8:29 pm
Yes, I would be worried.
March 5, 2020 @ 5:41 pm
I used to b a coke user like a gram a day my last use was August 15 2019 I had a hair follicle November 18th 2019 and I failed for cocaine they said the metabolite was 11.3. My hair is really long and thick I noticed when she sent the sample she sent all 12+ inches she cut to the lab. Anyhow I don’t think anyone expected me to pass bc even the lab said they go back at least 4 months. Now I have another test for the middle of March 2020 it will b almost 7 months clean. Should I be ok? The lab said in November the metabolite was abnormally high? If it was that high even if it’s been 7 months since my last use almost 4 months since my last hair follicle test will I still fail? I just don’t understand I thought if I quit then my hair follicle would come back clean as long as I was clean fur 90 days?
March 10, 2020 @ 6:16 pm
The answer to your question depends on how far back your hair test is looking: 90 days is normal, but sometimes for legal purposes they will take a longer 6- or 12-month sample.
It sounds like your last test was a 6- or 12-month look-back, given the length of hair sample taken (note: a 12″ hair sample = 24 months of hair growth).
Knowing this is critical.
Whatever the look-back period is, deduct another 30 days from the first day of the look-back period to figure out the “latest safe date of use”, i.e, the latest date you could have used and still test clean.
If your hair test is on April 1 and the look-back period of the test is 6 months (180 days), then your “latest safe date of use” is Sept 1. Here is the math:
Sept 1 = (April 1 test date) – (180 days for the test) – (30 days for blood level to drop and clean hair to grow through your scalp).
In this case, if you used after Sept 1, then you are at risk for failing the April 1 hair test. In this case, consider cutting your hair and/or using a cleaning regimen to reduce your risk of failing.
Hope this helps!
Best of luck on your test 🙂
A little nervous
June 1, 2018 @ 4:13 pm
I am frequent user of smoke . Been 3weeks since I have smoked any and prob only smoked once every other week . Have a follicle test . How close you think it is ? Like I said don’t smoke daily ,will go weeks at a time without smoking …
June 6, 2018 @ 8:28 pm
If you smoke every other week, then you will probably fail a hair test.
June 2, 2018 @ 10:23 pm
Haven’t smoked since January, would I pass a hair test?
June 6, 2018 @ 8:27 pm
Yes, you are just under the wire for a 90-day hair test. If the test if for any time period longer than that, then, NO you will probably fail.
June 3, 2018 @ 4:32 pm
Im freaking out. I have a hair drug screen in 60 days. I was smoking just on the weekends maybe just a few hit everyday till Monday then nothing till the following Saturday. Ive been 11 days clean now and i start my new job tonight. Ive shaved my head but still freaking out due to my family relying on me for this job. Will i pass? If not what do you suggest please help
June 6, 2018 @ 8:22 pm
You are definitely at risk of failing.
Take a look at the cleaning regimens on this page and choose one to strip as much THC metabolite as you can from your hair, right before your test: https://hairfollicledrugtest.info/thc-detox-clean-hair-home-remedies/
Best of luck.
June 3, 2018 @ 4:44 pm
Cut my hair a week ago will I pass when enough hair grows
June 6, 2018 @ 8:20 pm
You need to wait longer than that to cut your hair, if we’re talking about marijuana.
If you have been smoking/using mj regularly, then you’ll need to wait about 110 days after your last use before cutting your hair down to 1.5″.
June 12, 2018 @ 3:07 pm
Hi jay, i smoked a blunt 11 days ago and it would be my second time smoking ever also i have a follicle test friday but i have not smoked before that in 3 to 4 months will i be able to pass the follicle test?
June 13, 2018 @ 3:20 am
You should test clear. I’d be really surprised if you didn’t pass.
June 26, 2018 @ 4:09 am
If you cut your hair often (every 3 weeks) will weed stay in your system longer, shorter, or doesn’t have an effect? I took a dab about a half month ago prior to that I was clean for like 2 months prior to that for like 3 months. Will I be clean in 2 months?
June 28, 2018 @ 2:57 am
The frequency of hair-cutting has no effect on the amount of drug traces left in your hair. The major factor is the amount of time since your last use.
Here’s why: drugs and their by-products (metabolites) are continuously deposited into your hair follicle from your bloodstream and onto the surface of your hair via your sweat glands.
As the amount in your blood declines, the amount deposited onto your hair gradually slows, then stops.
June 27, 2018 @ 10:28 pm
Why is it that I have always heard that hair drug testing goes back 5-7 years?
I have used meth, crack and coke but not for at least 3 years.I couldn’t tell you the exact amount (yeah prob a good bit)
Just took one but it was from the armpit.
whats the chances of passing? past rumors of hearing it going back that many years scares me!
June 29, 2018 @ 2:42 am
You’ve heard wrong.
Most hair tests used by employers and courts can NOT reliably detect drug use beyond 6-12 months or so, because your hair degrades & changes over time due to exposure to the environment and to chemicals/shampoos/etc.
Exception: If you are taking a court-ordered CPS test and the test is a so-called “Zero Limit” test, then it may detect drug use of any level during the prior year or so. But zero-limit tests are rare and are subject to legal challenges.
Here’s a recent Q&A on AVVO in which lawyers explain the time limits of the hair drug test:
June 30, 2018 @ 4:41 am
I have a question? Last time I smoked was 6-7 months ago? I’m not a smoker it was just a few hits on a blunt and I haven’t smoked since ? I have a hair follicle test in a few days and the test will go back for 6 months … will I past it?!
July 2, 2018 @ 2:35 am
You can relax, you will very likely pass a 6-mo hair drug test if all you did was a few hits from one blunt – that’s not enough THC to fail you.
July 1, 2018 @ 3:12 pm
I keep seeing 100-110 days .. When do cut the contaminated hair off ? Do I need to shave everything .? I have a beard also .! My cousin is a supervisor so he says they’ll definitely take a hair test .. My hair on my head grows but it might take forever to grow 1 1/2 inches so I’m thinking body hair .. I just need to know at what stage of my sobriety to cut it so it will come back clean ..
July 2, 2018 @ 2:29 am
Great question! If you have no time pressures, then:
For a light to moderate user, shave your head and body about 20 days after your last use – you should be growing clean hair through your skin by then.
For a heavy/chronic user, give yourself 30 days before shaving.
February 4, 2020 @ 12:56 am
Can the detox shampoo help with getting rid of cocaine and opioids?
July 4, 2018 @ 4:21 pm
Hi. Custody mediation coming up. Ex is alleging drinking problems. Haven’t drank anything in two weeks, before that was maybe a 6 or 12 pack every few days. If I volunteered for a hair alcohol test say, next month, would I be ok? I shave everything except my leg hairs normally, and beard is about 3″. Beard is black and curly, head is mostly gray and shaved to about 1/4″ usually.
July 6, 2018 @ 2:19 am
You are at a very high risk of failing a hair test for alcohol, if you’ve been drinking 4-6 beers per day for months.
July 4, 2018 @ 5:20 pm
Im black with course hair and haven’t smoked weed in 2 years. would have been 3 except for a small relapse. the lab used my under arm hair.
July 6, 2018 @ 2:17 am
If you only smoked a J or so, you shouldn’t have a problem passing. Even with underarm hair.
July 7, 2018 @ 6:43 pm
I was told I had a hair follicle test 5 days before because my urine test was negative dilute and it wasn’t my urine…. I was freaking out, I have been smoking daily for the last 2 years….. I was online looking for ways to get this out my hair…. Everybody was saying I couldn’t beat it…. I found products on line with a 200% guarantee, I was like this has got to work…. my products came on Saturday….. the last time I smoked was on Friday… I followed the directions Nexxus shampoo, baking soda paste, Clean and clear 30 min, tide, nexxus shampoo, vinegar and clean and clear 30 min, tide then nexxus shampoo, I did this 3 x Saturday, 3 x Sunday, 2 x Monday, 1 x Tuesday and followed with the clear choice and went to take my test…. I was freaking out for days and my scalp was on fire for days…. my hair is in a natural state and it is short…. my ears were peeling, my scalp hurt sooo bad it gave me a headache…..after 10 days of freaking out, I received an email from HR giving me a start date….
July 9, 2018 @ 2:11 am
That’s awesome news! Congrats on the new job.
July 18, 2018 @ 11:43 pm
Everything completely bald ?
August 3, 2018 @ 1:00 am
I have a hair drug test coming up between the days of the 6th or throught to the 10th in Aug 2018. The last time I did marijuana was october 13th of 2017 and was only a hit. And before that in Sept 9th of 2017, and I only did hit. Would I have to worry about it showing up on the test? Haven’t done anything since then. it’s about about 290 days since then.
August 9, 2018 @ 9:49 pm
I would not worry too much. Two hits in a year is not enough to fail, IMO – very, very likely you will pass.
August 4, 2018 @ 5:21 am
Hey Jay Z First of all thanks for answering everyone’s questions. I smoked a strong medical joint on July fourth, about five hits. Then i ate some weak edibles last week, no signs at all of a buzz, let alone being high. Before that I haven’t smoked since 2017. I will have a hair test some time mid to late August. How do my
August 9, 2018 @ 9:47 pm
Your odds are good. One J is not enough to fail. And edibles take a while to build up and then decay, so they are less likely to peak above the min. threshold. That said, I don’t know how many you ate nor their concentration… but the fact you felt nothing tells me you’re probably good to go.
Best of luck on your test!
Christopher Dale Adkins
August 10, 2018 @ 9:08 pm
I just had a hair test today and Im nervous as hell. I was a daily smoker of average bud. Every evening I would smoke a bowl or two with my wife and neighbor. I’d say we went through an 1/8 every week and a half on average. 95 days ago I quit, 60 days ago I shaved my head and I have had two haircuts to keep my hair around an inch or so since then. My hair grows extremely fast. The tests they took today were roughly an inch in length. What do you think my odds are?
August 14, 2018 @ 9:21 pm
If your hair grows fast as you say (thin, Caucasian hair grows fastest) AND you only had 1″ of hair on your head to be sampled (which is about 60 days worth of growth – or maybe 55 for you), then given your data I’d say you have a good chance of passing.
August 31, 2018 @ 5:18 am
I’ve taken a bump or two of coke about once a month and about a hit of weed a week for the last four months what do you think my odds are on passing?
September 2, 2018 @ 2:03 am
Your odds of failing are high. Sorry, but that’s too much use to be safe.
September 6, 2018 @ 3:22 am
Hey-over the last three months I’ve taken a few hits on a bowl here and there (like a hit or two each time and maybe 7 times over the last 3 months). Before that I hadn’t smoked in months (probably close to a year). Applying for a job and they do a hair follicle test. What do you think my odds are of passing? Do you consider that minor usage?
September 11, 2018 @ 1:56 am
7 times over 3 months is probably enough use to test positive (sorry to say).
September 10, 2018 @ 7:47 pm
I had a few hits of weed back in February of 2018. I only smoked once before about and it was about a year in between. I have a hair follicle test this September 2018. Its been about 7 months. Will I pass the hair follicle test?
September 11, 2018 @ 1:54 am
Yes, I think your chances of passing are excellent.
October 8, 2018 @ 11:13 am
Last smoked was jun 27. Approx 96 days almost clean (apart from one cone mid September) before june, I smoked semi regularly for 2 months. Meaning 3/4 times weekly, only chop. Before that I only smoked minor ammounts. Will I be ok for a hair test in 3 weeks? Im a white female with dark, thin and straight hair. The last two weeks ive been using colligen and biotin tablets to stimulate hair growth
October 12, 2018 @ 8:27 pm
You are right on the edge of having 90 days of clean hair to sample, given your moderately heavy use prior to June.
Whether they find traces or not depends on how well the lab tech cuts your sample from the scalp line out.
December 4, 2018 @ 4:46 am
Jay just want to say thanks for replying to so many people, I work for a company that tests hair on a 5 panel every 90 days as we are responsible for alot of peoples safety. I took a trip to Amsterdam and took 3 hits of weed out of a brand new one hitter, I’m 6’7 and 340lbs, this was one week ago and my test is in 8 weeks. Should I be concerned I CANNOT rise losing this job.
December 6, 2018 @ 7:32 pm
I wouldn’t worry about failing. One use / 3 hits is just not enough to fail a hair test.
Thanks for taking care of the rest of us 😉
October 31, 2018 @ 10:35 pm
June 4 2018 – 2 tokes of mj 2 nights in a row. Mid August – 2 tokes of mj 2 nights in a row. Sept 18 – 1/2 line of coke. Nothing else in years. 6 month hair follicle in the next month.
Female. Brown shoulder length hair. Never dye it. Chances? Australia
November 1, 2018 @ 7:14 pm
That’s not a lot of use, and it’s spread over a lot of time. So my strong guess is you’ll pass.
Let us know how things turned out!
November 12, 2018 @ 11:57 pm
Hello, thank you for the information compiled here. I stopped smoking weed on August 1, i was a heavy smoker, at least 1 joint per day. Since then I have been doing daily exercises, and I would probably have to take a hair test in 3 months, on February 2nd. It so happens that on Saturday, November 10, I toke 3 hits of one joint, shame on me, i was drunk, I’m very worried about that. Do you think this tokes can prejudice me in the cleaning process I’ve been doing since August?
I would like everyone who came here to ask questions to come back after the test to give feedback, it would have helped a lot. I’l be back.
November 14, 2018 @ 7:20 pm
Your recent use won’t make much of a difference in your test results. That said, with only 90 days I’d strongly recommend cutting your hair down to 1″ or less before the test. Anything longer will probably register high on metabolites/THC use. Good luck!
November 13, 2018 @ 6:36 pm
So I was a heavy user for a couple years. I quit on 4/20 of this year. I have a test coming up in which they said they will test 60 days back. I had 2 bong hits, a very small amount of weed. Was stuff I found in an old jar. I picked off stems and a small amount of keef. But I felt really high about 5-6 weeks ago. This was the only time since I quit on 4/20. Im very active and have a fast metabolism. Short dark hair under 2 inches. Will I pass a hair follicle test.
November 15, 2018 @ 7:21 pm
Yeah, I think you will pass just fine. Best of luck!
November 14, 2018 @ 3:34 am
Been clean almost a year, took a hair test for a job and passed, was wondering what the odds are of smoking once a month and being able to pass a hair test if given another random screening?
November 15, 2018 @ 7:22 pm
I wouldn’t risk it, if it were me.
December 8, 2018 @ 9:17 pm
Have a hair test this week. Last time I smoked was 4-6 hits from a vape (weed) end of October (now mid-December) and have not smoked for a year before that. This is for a dream job. Will I pass? Female, fine brown hair.
December 9, 2018 @ 7:33 pm
Yes, I think you will pass just fine.
December 17, 2018 @ 6:25 pm
I smoked weed for the first time in my life in mid-October and I took six hits off a weak cartrige in a dap pen. I then smoked weed for the second time on Nov. 30th and took 2 hits off a strong cartridg. I’m 18 years old, 5’6 120lbs. I was randomly tested in high school on December 11th 2018. What are my chances of passing the test?
December 20, 2018 @ 7:36 pm
Your chances of passing are very good.
January 16, 2019 @ 11:22 pm
I had one hit from a vape pen 11/12 and have a hair test coming up 1/24 (73 days). Other than that, hadn’t smoked for 6+ months. What are my chances of passing?
January 22, 2019 @ 8:02 pm
Your chances of passing are very good.
Concerned as hell
January 28, 2019 @ 12:21 am
I have been a very heavy timer for years. I quit heavily smoking about 3 weeks ago when I found out I need to do a voluntary hair test. I did have a couple small rips on a vape pen 1 week ago, and a brownie a month ago. I have not done jack in what will be almost 2 weeks, by the time I do the hair test (5 days from now). By the time I do the test, I will have 4 macujo treatments in, (1 week from the test day) and will do a “back to back” Zydot Ultra Clean regimen the morning before my test later that day…realistically what are my chances of passing?
January 31, 2019 @ 7:55 pm
I really can’t say… that’s really heavy use & very close to the test date. Also don’t know how long your hair was.
I think everyone here would be really interested to know how you fared, though – could you report back and let us know?
March 2, 2019 @ 9:19 pm
I have a big internship scheduled for this summer but have a hair drug test on March 4th. I started smoking for the first time in September and only about twice a week. I haven’t smoked in the past 50 at all and only smoked twice the month before that. However about 90 days ago for a week I smoked heavily with friends. I shaved all my body hair 2 weeks ago and shaved my head hair to 1/2 inch. Do you think I can pass? I’m willing to do whatever I can to make sure I get this internship!
March 3, 2019 @ 7:51 pm
If they accept the short sample length, you should pass just fine. But 1/2″ is too short for a sample – my guess is they will either defer your test until later or try to sample your body hair (which should be clean but is also VERY short).
March 13, 2019 @ 5:46 pm
My husband will be taking a hair follicle test soon. He will be almost 60 days clean (from a daily user for months-like 1 a day). He has extremely light blonde hair, works out regularly is 6’0 220. He is using a T-Sal shampoo daily until his test and we plan on doing the mac method and zydot treatment. Do you recommend anything else?
March 15, 2019 @ 7:46 pm
In my experience, using one shampoo or another isn’t enough. You need to deep-clean your hair using a regimen of products.
The two cleaning procedures that have the most success based on my experience/research are the Macujo and JerryG methods.
Here is a page that explains both of these in detail, along with step-by-step instructions: https://hairfollicledrugtest.info/thc-detox-clean-hair-home-remedies/
March 15, 2019 @ 5:38 am
6’0 200lbs, Semi-wavy dark brown hair, actively work out. December 20th, 2018 I took a couple hits of weed, first time I ever did it. Was pretty elevated high, but not extremely. December 27th I did a single hit off a dab, was extremely high, but I was also drunk so it was hard to tell. Threw up for hours. It is now March 14, 2019 and I took a hair follicle drug test earlier today. Those are the only two times in my life I’ve ever been high. What do you think the chances of me passing is(preferably in percent form, helps with state of mind on the issue). I’ve read through all the comments and I just wasn’t confident enough to move on thinking I could be confident enough without asking. Unlike everyone else, I promise I’ll respond back with my results! <3
March 15, 2019 @ 7:44 pm
I wouldn’t worry too much. Two uses (total, in your life) just isn’t enough to get your blood level up to the cutoff.
Yeah, most people just want to move on with their life I guess. No problem for me.
Let us know how things turn out!
June 3, 2019 @ 3:26 am
Took a 2 vyvanse 30mg 3 weeks ago havent done any before that have a hair follicle test will it show up
June 5, 2019 @ 6:06 pm
June 6, 2019 @ 5:11 pm
Took quite a few hits of a bong on the 1st June.
Shared two joints on the 4th May with 6 people.
Shared a joint on the 1st March with 4 people.
Before these dates, I’d maybe smoked once every 2 months.
Hair test on the 15th July.
How are my odds?
Should I shave my head and if so when?
June 7, 2019 @ 5:57 pm
Really good chance you will pass, because that’s not much use.
At this late point, shaving your head won’t do much to help. So keep your hair.
June 6, 2019 @ 6:14 pm
My ex is being ordered to hair screen every 3 months, urine screens twice a week. He’s always used cocaine/crack and heroin/other opiates. He claims he was sober for 11 months (though he’s very good at using fake urine and devices to get around the urine screens) he said he had a relapse where he binged on cocaine substances for about 2 weeks in January 2019 (11 months sobriety prior) he is saying this first hair screen (taken June 3, 2019) will likely be positive bcuz of the January 2019 relapse and is now trying to say the lab tech told him the September 2019 test could likely still be positive too. I’m calling bullshit…what’s your take?
June 7, 2019 @ 5:54 pm
It depends on how far back the test goes. Some court-ordered hair drug tests look back 6 months, for example. If that was the case with your ex, them the June test would def. fail.
But the September test should definitely test negative / be clear, if the last time he used was in January.
June 8, 2019 @ 7:58 pm
Hello! I could use some help Please!
Was a regular smoker for years until…
Last day i smoked weed was May 11th.. I took about 5 hits in the month prior to that. April 20th being when i *soft* stopped haha.
Im concerned about a Possible hair follicle drug test in early to mid September for a union job.
Im never smoking again. Too much stress and i want a better life.
Been skateboarding regularly and sweat every day in the warehouse to hopefully help expel what’s in my system already…
By my estimation i will have not smoked for about 119 days by the possible time of the test…
I would REALLY appreciate some help or insight. Like i said i want to better myself and my life…
Thank you Kindly
June 10, 2019 @ 5:49 pm
Good news: you have just enough time to protect yourself without having to do anything special, other than cut your hair.
Just ake sure your hair is 1.5″ in length or less all around your head the week you get tested. This assumes you are getting a 90-day look-back/1.5″ sample hair test.
If it’s a 6-month/3″ test and they won’t accept a shorter hair sample, then you’ll need to strip your hair using Macujo, et al.
June 11, 2019 @ 4:52 pm
I smoked daily around 5-10 joints a day, stopped 52 days ago and now i have a hair follicle test coming up!.
This is for a large settlement. I have shaved my head down to 1cm and shaved my whole body hair bald but i am still failing my home urine test, does this mean i will still have it in my blood? If so will i still have it in my new growth of hair?
Im so worried i dont smoke no more and this settlement is going to be life changing so im worried if i fail it will reduce the amount. Can you please give me your opinions.
June 14, 2019 @ 5:41 pm
If you are failing a urine test right now, then yes your blood levels are still high enough to fail.
This means your hair follicles are still getting a failing level of THC metabolites in them as they grow.
Once your urine test says your blood level is clear, then you should wait a week or more then shave your head. All of your hair from that point forward will be clean.
If you want to keep hair on your head, then you should wait at least 110 days after your first clean urine test, then cut it to 1.5″ in length or shorter.
If none of the above is possible due to timeline, then you need to consider doing the Macujo or another cleaning regimen and hope it’s enough.
Best of luck!
June 13, 2019 @ 3:02 pm
I don’t smoke marijuana at all but I have a friend that smokes around me at least once a week. Unfortunately, I haven’t washed my hair in about a month & got a surprise hair follicle test yesterday. Should I be worried??
June 16, 2019 @ 5:33 pm
No, you shouldn’t be worried. You can’t fail due to second hand exposure.
June 18, 2019 @ 4:24 am
Hi I smoked on 4/6 and I have a test 6/18 I rarely smoke like every 3 to 7 months. I did just cut my hair short should I still pass my test? I’m stressing out.
June 20, 2019 @ 5:28 pm
I’d be REALLY surprised if you failed a hair test having only smoked once in the past 3 months. Let us know how it turned out!
June 19, 2019 @ 10:20 pm
Hey Jz. I stopped smoking MJ about 90 days ago and im going to be applying for a job where they do hair testing and they claim they look back 6 months. How likely is it that i will pass or not pass the test?
June 20, 2019 @ 5:25 pm
The answer totally depends on how much you smoked during the past 90 days – once a month, once a week, every day…?
If once a month, you’re probably safe. If once a week or more frequently, then you are def. at risk of failing.
June 20, 2019 @ 2:36 pm
If a person smoke a few hits of mj once a month for the past three months but dont hardly smoke (I dont smoke, only certain occassions). I took a hair follicle test which I paid for to be sure that I could pass. What do you think?
June 20, 2019 @ 5:23 pm
If you only smoke once a month – and not all day each time 😉 – then it’s highly unlikely you’ll fail a hair drug test.
August 1, 2019 @ 12:01 am
I’m not a smoker but I tried some brownies which I think has liquid THC in it around May 2019. Is this bad? How would it effect my hair drug test? I also have aspects so I keep my hair cut very low because it helps control the bald spots
August 19, 2019 @ 9:09 pm
You won’t fail a hair test due to one pot/THC brownie.
August 8, 2019 @ 6:02 pm
Hey Jay, i passed my hair test a year ago and havent smoked since and i have another hair test tomarrow. I hit some strong weed 4 big puffs and thats it 12 days ago. Do you think i will pass?
August 19, 2019 @ 9:06 pm
Yeah, I’d be surprised if you failed based on 4 big puffs.
August 13, 2019 @ 7:37 pm
My ex and I are in a custody case… I passed my follicle test. If he partied with coke every weekend between may and July do you think he would be able to pass a test this week?
August 19, 2019 @ 8:58 pm
My guess is that he won’t pass, no.
August 17, 2019 @ 5:10 am
Hey there! I have a new prospective job coming up, and they want a hair test done. I’ve used high CBD and low THC with under .3% THC for both of the brands. I vaped and mixed two different strains together. Just found out the other brand, who claimed they had under .3% thc has their test for their strain that I have.
It has 0.78 THCa with “total potential THC” listed as 0.68%. That was my fault for getting it before checking that they had a test online, then forgetting about checking back. Anyways, the other tested great at 0.130% total THC, and is the one that I used the most of. I made an 1/8th and used 3/4 of the lower THC strain and 1/4 of the other.
I had maybe 5 or 6 vape sessions tops total in the past month from July 17th to the 10th of this month of August. I did eat some of the gooey oil that I clean out of my vape that’s concentrated oil that condenses off of the flower, as well.
Thanks for listening through my rambling, and I’m hoping the calculations and details might help. But I go for the hair test on the 26th or 27th and have another one after that. I’m hoping I’ll pass, and I’ve also heard that relaxing the hair helps.
I do feel like it being so close to the testing date and with the fact that I vaped as many times as I did that I would test positive.
August 17, 2019 @ 3:15 pm
I was a weekend cocaine user and smoke marijuana daily. I stopped the end of May I have not did anything in 90 + day’s they need to take hair from my beard do you think I will pass
August 19, 2019 @ 8:28 pm
Given your heavy THC use, you’ll need at least 120 days of abstinence plus a very close shave right before your test to have a decent chance at passing a 90-day hair test. If the test looks back farther than that, add the extra # of months to this time.
August 17, 2019 @ 8:50 pm
If the last time I used any substance was 10 days ago, and if I shaved all hair off,head face arms legs,would the new hair growth be drug free?
August 19, 2019 @ 8:26 pm
No, your hair would NOT necessarily be drug free – and 10 days is cutting it really close for ANY drug.
The answer depends on the drug.
For THC: no, your new hair definitely won’t test clean after 10 days of abstinence (assuming you’re a moderate or heavier user).
For most other drugs including alcohol, the metabolites and chemicals tested in a hair test will quickly decline in your bloodstream – takes a few days to a week, depending on the drug and how much you’ve been using.
Regardless of drug type, once your blood level is below the cutoff point all new hair growing after that point is clean for a test… however, it takes another 5-7 days for that new hair to grow through your scalp.
So as you can see, 10 days is not something you should bet your job on.
August 17, 2019 @ 10:43 pm
I smoked pot about a year ago about 4 hits, also 1 hit 6 months ago and 1 hit 3 months ago. Took the test Friday they had to take body hair. Should i be ok?
August 19, 2019 @ 8:19 pm
Yep, you should be fine. Let us know how it turned out!
August 18, 2019 @ 2:52 am
I did 2 lines of coke on aug 10th before that i dont do any other drugs this was a 1 time thing and i hear hair follicle tests cant detect 1 time use. But my hair test is somewhat soon sometime this month or early september will i pass?
August 19, 2019 @ 8:18 pm
You heard correctly – you aren’t going to fail a hair test if you only did coke once.
August 19, 2019 @ 1:12 am
Jay, I have read every response on here and you are extremely helpful. I’ve been a heavy smoker for over 10 years. I smoke approx. 1/4 ounce a week of good weed. I stopped smoking a month ago. 1 week ago I smoked 1 joint. I have a super fast metabolism and light blonde hair that grows fast. I have a hair test coming up in 4 weeks. I’m sure I can pass a pee test now if I took one. If I drink lots of water and sweat from working in the Florida heat should I be clean in time? My hair is 3” at the moment and can cut it down before the test. Thanks.
August 19, 2019 @ 8:16 pm
Sorry, but I seriously doubt your hair will test clean in 4 weeks if you only stopped using 1 mo / 1 week ago. You need at least 110-120 days of abstinence to grow enough clean hair for a 90-day test.
If you can get the test delayed for a month or two, then do it. Otherwise, you should def. consider doing the Macujo or Jerry G to strip your hair before the test.
August 26, 2019 @ 10:21 pm
I have been clean for almost 7 months took one small hit off a blunt and didnt even get high and that was 2 weeks ago I have a hair drug test this friday. You think i will pass? Thanks in advance!!!
August 28, 2019 @ 10:33 pm
You should be safe. Good luck!
September 3, 2019 @ 8:47 pm
(Please don’t approve the comment where I used my full name)
Hey Jay. I have a hair follicle drug test coming up tomorrow, September 4th. I am an extremely light user. I smoked one time at the end of February , a relatively good amount(3-4big tokes), and I accidentally ate a pot cookie on June 14th while I was drunk. I was told the cookie had 10mg(I also heard 20mg…I’m not sure.) Since then I’ve done nothing. Prior to that I’ve also barely done anything. Maybe smoked 2-3 times last year total? I have very dark wavy hair that grows relatively fast. I recently got it bleached on July 28th, not specifically to get a rid of THC but maybe? Haha. The person bleaching it left about .5 inches from the root unbleached, though.
What are my chances in passing?
I’ve been really anxious about this. Thank you.
September 8, 2019 @ 10:28 pm
I think you’ll pass no problem. You haven’t used enough to register. Let us know how it turns out!
September 6, 2019 @ 12:18 pm
Mayboe someone can answer my question. Cps got involved in my case about 2 and half years ago. Well found old hair follicle results the other day. My 2 kids date of birth is wrong on both results. And husband and I dont have a reffered physician listed on ours like the kids do?!?! So I guess im asking is this normal or what!
September 11, 2019 @ 9:24 pm
Hey Jay- Regular marijuana smoker here but stopped 121 days ago. Got a new job and the HR rep said it will be a 6-month hair test. My head hair is ~1.5″, does my body hair have a chance of failing the test? Is my head hair too short for a 6-month test?
September 13, 2019 @ 10:18 pm
Yes, your head hair is too short for a 6-month test. On the other hand, all of the hair on your head is probably clean.
Yes, your body hair can fail you – if you give them the opportunity to sample it. Suggest you shave your pits and chest, asap.
Good luck on your test – and your new job!
September 11, 2019 @ 10:24 pm
Hello, I used to smoke a splif daily but stopped at the start of May, I had a 100mg gummy bear on 12th August, don’t think it was a full 100 mg as it did not seem very strong at all. I’m bald with a beard, very short to no body hair, potential on a test mid – end of October.
September 13, 2019 @ 10:20 pm
You should be good to go by the end of October – good luck!
September 21, 2019 @ 9:03 pm
Hey jay, been reading up on ur page for months lol thank you for helping us all out. Real quick, i stopped smoking weed on april 9th, today is September 21st, i also have a short haircut, i believe its cut down to about 3/4th of an inch right now. Im over 165 days clean from smokin weed, havent takin a perc since a month before that n havent done coke in years. I make my girlfriend smoke pot outside i dont even want second hand smoke comin in my system. My only question is, i handle marijuana on a daily basis, just touching it and putting it into ziplocks and what not. What are the chances of that causing me to fail my hair test comin up in 2 weeks. Im so paranoid because im getting into a union ive been trying to get in for years.
October 3, 2019 @ 9:12 pm
You won’t fail a hair drug test for THC due to handling marijuana or due to second hand smoke – even if you breathe some of it. That is a well-debunked myth.
September 26, 2019 @ 3:31 am
Hey there. Question. Here’s what makes sense to me. I’d like to verify.
I have an upcoming hair follicle test, it’s likely to be 1 to 2 months away. For several weeks over the last few months, I’ve used significantly, not marijuana. I did not years prior to that at all. It seems to me, if I stop all usage ( which I have roughly one week ago ) wait a week or two from now, then shave all hair off my body, then the hair that grows after the cessation and shaving should all be clean, correct?
It’s my understanding that the metabolite shows up in the follicles after 5 to 7 days of initial use. So once they have shown up in the hair, and then that hair is allowed to go out a bit, it should be able to be cut and then removed completely. Right?
Can you advise if this is a sound strategy, and, if not, how may I adjust it to be more certain?
October 3, 2019 @ 9:01 pm
Actually, all drug traces get into your hair follicle almost immediately after you use a drug (any kind) – because the hair follicle consumes blood to grow.
That newly-tainted hair then takes 5-7 days to grow through your skin to make itself avail for sampling. This is where the “5-7 days” thing comes from.
In your case, given the short 1-2 month lead time you cannot possibly grow 1.5″ of untainted hair (the length required for a 90-day hair test).
Cutting your hair down to 1/2″ or less by the time of the test will protect you from failing the cutoff level – but they might fail you for not having enough hair to test.
Make sure if you do take the test you shave your armpits and body hair completely so they can’t fall back to sampling that hair instead.
Best of luck.
September 27, 2019 @ 9:32 am
Hey! I have been dabbing concentrates couple times a day for almost about a month now but was clean before that. I will have hair test March 15 2020. If I’m; working out, using sauna, 14% body fat, are my chances of passing good? I think it’s about 160ish days from now
October 3, 2019 @ 8:54 pm
As long as you don’t use again, you should pass with flying colors – good luck.
September 29, 2019 @ 4:00 pm
I was a chronic user of marijuana and I stopped on april 20th (kind of ironic for it being 4/20) I didnt smoke again until July 4th when I smoked a bowl. I have yet smoked since then. Today is September 28th and I am trying to find out if I will be able to pass a hair follicle test on October 15th for an opportunity of a job that I cant pass up. Would I pass Jay Z?
October 3, 2019 @ 8:52 pm
Hey Josh, yes I think there’s a good chance you’ll pass a 90-day hair test. Best of luck!
September 29, 2019 @ 7:19 pm
I stopped smoking in April, and I have been waiting to get a job because of the hair follicle test. I’m told it goes back 6 months. Inqaa a heavy smoker. April 21 was the last time I smoked. Am I good to pass the hair follicle?
October 3, 2019 @ 8:50 pm
Sorry, but you’re def. not in the clear for a 6-month look-back test. Right now, based on the dates you’ve given you’ll be walking into the test w/ only 5 months of abstinence, meaning at least one month of heavy use will still be in the ~3″ sample they cut.
You’ll need to get another 40-50 days of abstinence before you’ll be clear.
Or, if possible, just cut ALL of your hair down to 2″ all around your head so they can’t take a full 6 month sample. And shave your body hair so they don’t try to sample that instead.
October 3, 2019 @ 3:12 pm
I am wondering if you can explain and go in to detail with examples the cut off points and amount of use required to fail a hair sample test.
I believe I am in the clear. I smoked 2 hits of a joint rolled with 1/2 tobacco and 1/2 24%THC MJ. Prior to that, I smoked a year before, daily for about a week long period. About 90 days after the two hits, I have a hair sample test by Quest Diagnostics or US Lab Corps. I have blonde hair and have worked out everyday the past 70 days since I smoked. I will be cutting my hair to 1.5” before the test and am not too worried about failing. Some companies claim they can only detect repetitive use while others claim they can detect single use in a 90-day window. I am wondering if you can explain the cut-off limits & repetitive use limits, and also any experience you have with hair sample tests from those two companies. Thank you!
October 3, 2019 @ 8:31 pm
Thanks for the detail, it helps. I agree you are probably in the clear if all you smoked was 1/2 a 24% blunt 90 days ago.
Working out doesn’t make a difference w/ a hair test (at all), because whatever got into / onto your hair in the past can’t be removed through exercise.
Who is telling you they can detect “a single use”? Because I don’t think they know what they’re talking about.
The hair drug test assay is performed on the entire length of hair (all 90 days)… this means that the THC metabolite that got into your hair from just one use (a tiny amount) will be diluted across the entire (clean) sample when it’s assay tested.
This is why there’s no way you’ll cross the cutoff from just one use in 90 days… unless of course you’ve been a heavy user right up to day 91.
Quest and US Lab are both about the same in terms of reliability and accuracy. Very reputable.
Good luck on your test!
November 12, 2019 @ 12:01 am
Does the mikes Macujo method work?
November 20, 2019 @ 6:22 am
Do courts order hair tests for DUI? I am in Colorado. I relapsed after 7 years sobriety from meth and used daily for about 10 days. Not sure how much I used. I’ve been using the Aloe Rid (old formula) shampoo out as a precautionary measure. Up to 22 washes. TestClean says at least 15 are necessary to clean the follicles. First court date is in two weeks which will put me at about 3 weeks sober. No clue if a hair test would be ordered. Thoughts? Am I screwed?
November 22, 2019 @ 6:17 pm
Martin, yeah CO prosecutors can request a hair drug test for alcohol – it’s most commonly used for follow up / monitoring if you are convicted. Here is a list of their guidelines: https://www.courts.state.co.us/Administration/Custom.cfm?Unit=prbsolcrt&Page_ID=696
November 30, 2019 @ 6:38 am
Jay, please help me. I’ve smoked a vape pen 57 days ago. I took about 5 hits. Before this it’s been years since I’ve consumed thc. Aside from that I haven’t used any thc product. I’m fairly active in my career. Work out about 3x per week. They did shave my leg and arm. Is it safe to say I’m ok? Or What are your thoughts/opinion? I’m going crazy
December 1, 2019 @ 6:27 pm
You should relax, 5 hits from a vape pen isn’t enough to fail a hair test. The test only detects long term use, not one time events.
January 20, 2020 @ 9:54 pm
What were your results?
December 12, 2019 @ 6:06 pm
I quit smoking back on July 6th. I then took 6 hits of a small joint on Nov. 27. My hair test is looking to be January 2nd. Should I be okay?
December 12, 2019 @ 6:38 pm
Kevin, you should be fine. Best of luck on your test.
January 11, 2020 @ 9:02 pm
I this thread still open to questions?
January 12, 2020 @ 11:40 pm
Yep – fire away!
January 12, 2020 @ 10:13 pm
Jay, it’s been about 7 months since I smoked and I was an occasional smoker (6 to 8 times a month, max). I had to take a hair test last week where they tested my leg hair. I’ve read different opinions on how long body hair can produce a positive, even up to a year. I know hair from the head is 90 days, but do you think I’m in the clear with the leg hair going back over 200 days?
January 15, 2020 @ 11:38 pm
JD – great question. There’s not a lot of data to go on when it comes to how long leg hair holds traces of THC. Given how long it’s been since you used, if your leg hair is 200 days old max, then you should pass with flying colors. The vast majority of it (guessing 90%) will be clean.
January 14, 2020 @ 2:17 am
Hi JZ. Thanks for all your comments.
I was taking around 120mg of addrell per week for around 5 months. Intermediate I would take breaks for and not do anything for 2 weeks at a time. Before this I did not take addrell at all. I’m 6’1 215 pounds with some body fat . I worked out a lot and sweat a lot.
If i cut my hair the way you have recommended. Do you think I will pass a hair drug if I’m clean for 6 weeks before a hair drug test?
January 15, 2020 @ 11:36 pm
You are running a high risk of failing a 90-day hair test given your long-term use of Adderall and the fact it’s only been 6 weeks since your last use.
January 16, 2020 @ 5:47 am
I have been clean for 65 days and have a hair test coming up next week. I cut all my hair very short probably 1/8th of an inch. I am wondering if the hair that is that short and the hair that grows will be clean or am I still going to fail?
January 18, 2020 @ 11:32 pm
The 1/8th of an inch will probably test clean… but it’s not nearly long enough to cut a proper hair test sample. So the’ll probably go after your body/underarm hair – or defer with a warning.
January 24, 2020 @ 2:48 am
I got some edibles for christmas 5 to be exact. I have a hair test Feb 1st and Im scared
January 25, 2020 @ 11:20 pm
Don’t be scared. That’s not enough use to cause you to fail a hair test.
January 24, 2020 @ 8:30 pm
I haven’t smoked since August of last year will I be able to pass a 90 day hair follicle test?
January 28, 2020 @ 11:19 pm
Terrell – yep, you should pass with flying colors.
January 25, 2020 @ 6:53 pm
My friend is a meth user. He needs to do a hair test. He hasn’t used in the last week. My question is will a hair test show when someone has and hasn’t used drugs? Or does it just show that someone uses drugs? We know he will fail because he uses but we want to know if it will show when he hasn’t used as well. He is trying to get clean but it is easier said than done.
January 28, 2020 @ 11:18 pm
A hair test can theoretically show when someone used… but I don’t know of any labs that will stand behind that kind of reporting.
In my experience, a hair test will not report “estimated time of use” or anything like that.
January 28, 2020 @ 5:02 pm
Quick question jay. I have a hair follicle test coming up in about a week or 2. I did a hit of marijuana like 2 years ago and also did some coke and meth on and off within a 2 month span 1-2 years ago. I don’t have enough hair on my head to get, I dont shave my armpits or my legs. If they pull from those places would it still show even though I dont shave those spots? I’m freaking out. Thanks you!
February 1, 2020 @ 11:11 pm
Don’t freak out, you’ll test clean. Unless you haven’t told us everything 😉
January 30, 2020 @ 9:26 pm
So I have a question and am hoping for some insight here!
They say that the Hair Follicle Test can detect drugs up to 90 days from your hair sample (30 days for every half inch, is what I’m reading). Now I haven’t smoked in a month, but I smoked just a little in December (maybe 5-6 hits tops) and my hair is currently a little over 3 inches long, maybe even 4 inches.
In theory, if I cut off 1.5 inches, or more, then the 1.5 inches left on my head should all be fresh hair, correct? Meaning that I would be cutting off the hair that contains any THC qualities. Can anyone back up this theory or am I crazy? Haha
Thanks in advance
February 1, 2020 @ 11:05 pm
Curtis, you’ve got the theory right. But be careful about how long you need to wait before cutting your hair. In general, for heavy or moderate users, you need to abstain at least 110 days before cutting your hair down to 1.5″ long. If you have any questions, use the Hair Test Questionnaire (link at top of page) to find out.
February 1, 2020 @ 3:58 am
I smoked weed heavy for a year, then quit for 7 months. Then smoked splifs with reggie for 2 1/2 months what can i do.
February 1, 2020 @ 11:01 pm
Your only shot – aside from getting an extra 110 days to abstain – is to try the Macujo or Jerry G cleaning regimens up to the day of your test.
February 2, 2020 @ 4:54 pm
I have a 30 day hair follicle and I’ve been clean 50 days my hair is blonde and short prolly like 1.5 in. I smoke about a gram of weed once a month before the 50 days I’ve been clean. Do u think I can pass?
February 4, 2020 @ 10:59 pm
KC, the hair test looks back 90 days, minimum. A gram of weed a month is enough to register. If you have time to abstain another 60-70 days before taking the test (~ 2nd week in April), then you should be OK.
February 5, 2020 @ 8:58 pm
I am due a drugs test in the next 3 ish months and I had one night of coke on the first week of November. I was wondering if I need to cut my hair? I have long hair! I never did drugs for about 1 yrs before this and havn’t done any since.
I am worried because it’s long itll.still be there.
February 8, 2020 @ 10:54 pm
One night of fun won’t fail you on a hair test. It’s designed to detect long-term (chronic) drug use… drug traces must remain elevated in your bloodstream for days to weeks to register.
February 6, 2020 @ 1:48 am
I last used cocaine in August 2019.. but I got a cps case and I failed a hair follicle with cocaine in November 2019.. they want me to do one in this month or the beginning of March do you think I will pass the drug test if I take one this month or should I wait until March
February 8, 2020 @ 10:52 pm
Wait until March, if you can. Best of luck.
March 6, 2020 @ 4:01 am
Did u pass I had the same thing happen? I have been clean for almost 7 months August 15th was the last use date and I failed November 26 for cocaine. The metabolite was high like 11.3 I have been inpatient and IOP and had 3 to 5 urine drug screens a week and since I’ve been clean I’ve passed everyone. I was a heavy user for a year of cocaine
February 7, 2020 @ 4:21 pm
Hey im Paul, I smoked weed and thc oil heavily for months, I stopped smoking and 10 days later i shaved my head and body, i will take a government hair follicle test about 80 days after not smoking and 70 days since i shaved. will i pass ?
February 8, 2020 @ 10:48 pm
With that much prior use, you are cutting it close Paul.
If I were you, I’d try one of the cleaning regimens described on this page… do the cleaning right up until the day of your test. Then get your hair cut to no longer than 1″ all over, and shave your body / underarm hair off completely. Good luck!
February 15, 2020 @ 6:03 am
If I used meth 6 times in the past 90 days will it show up?
February 18, 2020 @ 10:34 pm
Yes, there is a decent chance it will.
February 15, 2020 @ 10:56 pm
I took 1 mg of Xanax around 2 months ago that’s all I’ve done in the past 7 months will I fail my hair test……….
February 18, 2020 @ 10:32 pm
Hayden, you should pass with flying colors if that’s all you’ve done.
April 26, 2020 @ 3:17 pm
Hello, I took a Quest Diagnostic hair follicle test today and I’m very worried.
I was a heavy meth user (4 years, intravenous) but I have been clean for 10 months. I relapsed about 2-3 weeks ago and used meth (about 2/10th of a gram. 8-9 days ago I used about 1/10th of a gram of cocaine. And then the same amount of cocaine 7 days ago.
I used Synergy Detox shampoo (I’ve used it before and it didn’t work, although I was still using at the time). I had an extra bottle from when I tried to beat the hair test over a year ago. I have light blond hair that grows very slow.
So in a nutshell I’ve used meth once, and cocaine twice in the past month. What are my chances??
April 27, 2020 @ 5:18 pm
Jayme, if you’ve been clean for 10 months with only 2 slipups as discussed, then your chances of passing are pretty good (in my opinion). Best of luck on your test!
February 18, 2020 @ 1:33 pm
Hello i was a heavy smoker of marijuana but recently quit 6 months ago, i also took a tiny bump of cocaine 90 days ago prior to my test ive been clean about 160 days total 160 days marijuana and 90 days from that one time use of cocaine which was my first time trying it havent touched it since should i be worried at all about this hair test im taking for a job thats going to change my life or should i look for something else? I was homeless at one point, so this is very big for me im really nervous im trying to change my life around, other then marijuana i never really been into drugs.
February 18, 2020 @ 10:30 pm
Michael, with 160 days clean you should be OK as long as it’s a 90-day hair test). Good luck!
March 20, 2020 @ 12:22 am
I smoked weed all the time prior to quitting Feb 2019. I ended up hitting it a few times on New Years Eve but haven’t smoked since. This is for a custody battle. Will it show up? I’m a female with fast growing straight hair.
March 21, 2020 @ 6:36 pm
I seriously doubt that one use in over a year will register on a hair test.
July 15, 2020 @ 10:15 pm
I did a tiny bump of boi and the same 17 days later about 2 month ago Will it show up on my hair test I took today
July 16, 2020 @ 6:43 pm
I seriously doubt it will show up.
February 27, 2020 @ 4:56 pm
I took a urine test and it came back positive for marijuana and I did not use the court says that hair follicle test will not detect single-use if one party all night with cocaine or had very high levels of marijuana in their urine would it show up in a hair test if it was a one-time use?
I have 12 years in prison hanging over my head and I don’t know how else to prove myself other than a hair follicle test but they say that hair test will not detect single time use I read different nail Street it says it don’t matter if someone uses once or 50 times in a 90-day. It will detect that use. I really need help with this.
February 27, 2020 @ 7:57 pm
The bottom line is that smoking/ingesting normal doses of MJ just once or twice in the past 100 days almost never shows up on a hair drug test – and urine drug tests are far more likely to show a false positive than a hair test. So their advice is sound. If you haven’t used at all, then you should pass.
February 28, 2020 @ 4:59 pm
Hey Jay Z. First off thank you for providing this resource. I found out yesterday at the interview that if I am hired I will have to submit to a hair test. I smoke everyday, 3-4 times a day. Last time I smoked was yesterday morning. I was told that if they choose me that the whole hiring process will take around a month and a half and that I would do my test then. I was wondering if I abstain from using and then cut my hair in two weeks, would that new hair be dirty? I am a 29 yo male with 16 percent body fat and I am very active. My hair also grows faster than a half an inch a month. Any advice? Please help!!!!
March 2, 2020 @ 6:00 pm
Davie, you are very likely going to fail a hair drug test in the next 110 days, which makes you a prime candidate for using a proven hair cleaning regimen (Macujo or Jerry G) to strip your hair.
February 29, 2020 @ 6:37 am
Hello, I smoked a small bowl of weed to myself, I got three solid hits off it and got high. Prior to this I hadn’t smoked in 7 months, it’s been 40 days since I smoked that bowl, I have a hair follicle test within the next ten days. I keep my hair short to begin with so most likely it’s going to come from my armpits I’m thinking, I trimmed my arm pit hair about 2 weeks ago. Do you think I will pass a hair follicle test? I feel so stupid, total dream job opportunity out of nowhere and I let the stress of life get to me one day and I smoked 🙁 . Thanks for any input!
March 2, 2020 @ 6:01 pm
Michael, you will very likely pass your hair test. Don’t worry. That’s not enough use to register.
February 29, 2020 @ 6:50 pm
So I have a hair test coming up next week. I’ll be right around 100 days clean but prior I smoked about a gram of concentrates per week and then flower mixed in with that? Do I have a decent chance of passing?
March 2, 2020 @ 6:03 pm
You have a decent chance of passing if you cut your hair to no longer than 1″ all over your head. Strongly advise shaving everywhere else a couple of days before your test. Good luck!
March 1, 2020 @ 3:31 pm
Hey to anyone out there, I did a little bit of cocaine dec 24 of 2019. I have a hair follicle test on March 10. I haven’t done any since then. Even that day it was under a half gram. Any input would be appreciated I’m going to do my own test prior
March 2, 2020 @ 6:04 pm
Jim, don’t worry – you will very likely pass your hair test. That’s not enough use to register.
March 13, 2020 @ 12:49 am
I smoked weed on New Year’s Eve, maybe 4/5 hits of good quality grade. I hadn’t smoked in a year prior but did ALOT prior to that. I have a custody hearing in May. If a hair follicle test is asked, will I pass it? I’m female, brown thick straight hair that grows fast.
March 15, 2020 @ 6:23 pm
You should have no trouble passing a 90-day hair test for THC. Using once in a year isn’t enough to register.
March 14, 2020 @ 7:06 pm
I haven’t used or smoked anything with thc since January I believe. But for the last 2 days I’ve taken edibles and an unexpected hair follicle drug test is to be taken Monday, it’s now Saturday. If I do the Jerry g method will I be okay? I haven’t used at all today
March 15, 2020 @ 6:29 pm
If you fail, it won’t be because of your most recent use. It takes 5-7 days for newly-tainted hair to grow through your scalp, so there’s no way the lab tech will be able to grab a frsshly-tainted hair sample from you by Monday.
That said, if you used in mid-January or later and were a moderate user at the time, then you are def. at risk of failing.
March 19, 2020 @ 10:22 am
Hey jay, I was clean for about 80 days and then smoked a couple times last week not knowing I’d have a drug test. Now I have one coming up in about 2 weeks. Any suggestions? Will I pass without a method or should I attempt one? Thinking about using one of the methods
March 21, 2020 @ 6:35 pm
I would definitely consider using a cleaning regimen the week before your test. Good luck!
March 20, 2020 @ 7:46 am
Hello Tuesday was my bday. Was given a baggie of coke. My boyfriend on parole had to report today Thursday. And came out positive. After reading all of this. It was our intimacy and kissing that transferred?? Now he has to take a hair test on Monday? What are his chances of being clean??
March 21, 2020 @ 6:39 pm
Rita, it is all but impossible that your bf failed his hair test due to a transfer of chemicals during intimacy. Far more likely is: he used.
As to whether he will pass his hair test, it really depends on how heavy of a user he was and when he quit using. Use my Hair Test Quiz to find out if he will pass or not: https://hairfollicledrugtest.info/hair-drug-test-calculator-pass-or-not/
Good luck w/ his test!
March 21, 2020 @ 10:18 pm
I was a very heavy user every day of marijuana and have been clean for 133 days. I rolled a blunt and some got in my mouth a couple days and I might have swallowed it. Do you think I’ll pass if I take the test tomorrow or should I wait an extra week?
March 27, 2020 @ 6:40 pm
You should be OK if the test is for 90 days. Best of luck on your test!
April 1, 2020 @ 11:56 pm
Hey Jay Z, just wondering, if I took a couple hits off a dab pen three or four months ago, and then about 37 days ago I ate a 30 mg edible, is that enough to show up on a hair test that will happen in about three weeks from now? (I have never done anything previously before these two occurrences)
April 7, 2020 @ 6:45 pm
You should pass. That’s not enough use to fail a hair test.
April 13, 2020 @ 8:08 pm
I am a college student and have been given an opportunity through a professor to work for a large company making decent money. I smoked pot pretty regularly. Taking a few hit of a dab pen every night. The last time I smoked was March 26th of this year. I am expecting the test to take place mid to late June. I was told by the professor it may be a hair test. Will I pass? I was thinking about buzzing my head and shaving my body a the end of this month. Should I shave?
April 14, 2020 @ 6:50 pm
Richard, unfortunately you are at risk of failing due to your regular/frequent use. If you cut your hair down to 1″ or so right before the test (same week etc.) then you stand a good chance of passing. You might also want to consider doing the Macujo or Jerry G cleaning regimen to get a little more protection.
April 15, 2020 @ 9:34 pm
I smoked about a 20 of meth over a 24 hour period about 9 weeks ago have a hair test next week should I be ok. My head stays bald only grows about an inch and my beard is the only hair I keep. Should I be ok. I’ve smoked weed forever and only quit a month ago so I’m sure I’m screwed on the pot just don’t wanna flunk on the meth what do you think please respond.
April 17, 2020 @ 6:52 pm
You should be OK on the meth use. One time shouldn’t register. But on the THC, yeah, you will probably fail.
Also, for future reference: they can test your beard, too. And you know how long it takes to grow a decent beard…
April 24, 2020 @ 11:44 pm
How far back does body hair test for?
April 27, 2020 @ 4:51 pm
Because of its slow growth rate, body hair can record over a year’s worth of drug use.
April 25, 2020 @ 7:59 pm
Hi, consumed under half gram cocaine with friend (poor quality) on 13th April. Unfortunately also had under half joint on 23rd April. Being hair tested in July but will be sober till then. Any advice on outcome?
April 27, 2020 @ 4:48 pm
You’ll probably test clean. That’s not much use to register on a hair drug test. Good luck!
August 8, 2020 @ 9:58 pm
If I used shy of a gram of meth within the last few weeks would it show up in a hair follicle test?
August 11, 2020 @ 6:41 pm
Yes, it could.
August 11, 2020 @ 4:44 pm
If I took 3 hits of weed over a month ago and haven’t smoked in almost 18 years and have a hair test next week will I pass? It is for a job of a lifetime and figures the one time I do this I get a hair test for the first time in my life? I am 110 female.
August 11, 2020 @ 6:40 pm
Yeah, you should pass a hair test no problem. Good luck!