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How long does marijuana thc stay in hair follicles

A 21-year-old male asked:
Dr. Randy Baker
39 years experience Holistic Medicine
several months: See http://www.Canorml.Org/healthfacts/drugtestguide/drugtestdetection.Html quoting from it:"one study found that 85% of daily users tested positive ... Read More
Dr. Heidi Fowler
24 years experience Psychiatry
No, cutting hair or: Shampooing it won't cheat the test. Per' pharmacokinetics of cannabinoids' by mcgilveray ij. 'hair tests are more likely to detect regular than occa ... Read More
Dr. Michael Tomeo
37 years experience Dermatology
Drug deposits: Many drugs , particularly those that are fat soluble , can stay around and show up in drug testing for one month or longer.

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A 18-year-old male asked:
Dr. Lois Freisleben-Cook
40 years experience Pediatrics
Possibly no: The hair follicle test is standardized to collect a specimen dating back about 90 days. Depending on how fast your hair grows, you could possibly test ... Read More
A 33-year-old member asked:
Dr. Donald Jacobson
A Verified Doctor answered
A US doctor answered Learn more
Different answers: I have read that one time use might not even show up. Most answers say that if use is regular, then it will stay for about 2-3 months. One person said ... Read More
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A 39-year-old member asked:
Dr. Alan Ali
Dr. Alan Ali answered
31 years experience Psychiatry
Pot: Up to 90 days.
A 45-year-old member asked:
Dr. Alan Ali
Dr. Alan Ali answered
31 years experience Psychiatry
THC: Up to 90 days.
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A 52-year-old female asked:
Dr. Heidi Fowler
24 years experience Psychiatry
It is anticipated: That there will no longer be a positive hair follicle test this far out.
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A 26-year-old female asked:
Dr. Gurmukh Singh
48 years experience Pathology
Depends: THC is detectable in the urine for up to three months in chronic users. If hair is tested, the hair that grew out for up to three months after quittin ... Read More
A 18-year-old male asked:
Dr. Matt Wachsman
35 years experience Internal Medicine
Hair has no blood: So, once THC is in the follicles there's no way for it to get out. It stays in the hair until it is cut and grows out.
A 47-year-old member asked:
Dr. Heidi Fowler
24 years experience Psychiatry
Possibly for: Months. ' hair tests are more likely to detect regular than occasional marijuana use. One study found that 85% of daily users tested positive for mari ... Read More
A 47-year-old male asked:
Dr. Heidi Fowler
24 years experience Psychiatry
THC: Thc can usually be detected in hair testing at 90 days.

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