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Doctor insights on: How Long Does Thc Stay In Your Hair Follicles

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Dr. Matt Wachsman
Board Certified, Internal Medicine
30 years in practice
4M people helped
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How long does THC stay in your hair follicles?

How long does THC stay in your hair follicles?

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. ...Read more

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Dr. Aaron Milstone
Board Certified
21 years in practice
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Follicle (Definition)

An ovarian follicle contains a hollow ball of cells with an immature egg in the center. It is a structure within the ovary containing the egg that ...Read more


Dr. Michael Tomeo
Board Certified, Dermatology
32 years in practice
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Dr. Aaron Milstone
Board Certified
21 years in practice
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Dr. Alan Ali
Board Certified, Psychiatry
26 years in practice
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Dr. Donald Jacobson
Board Certified, Psychiatry
34 years in practice
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How long does THC stay in hair follicles?

How long does THC stay in hair follicles?

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 that his parents, both of whom are police, told him that it could stay for a year. Hair grows at 0.5 inches per month, so they usually cut off three months of hair growth (1.5 inches) for the sample for detection. Why not just not use the stuff? ...Read more

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Dr. Aaron Milstone
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Dr. Jared Adams
Board Certified, General Practice
5 years in practice
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Thc hair follicle testing how long does it stay in your system .

Thc hair follicle testing how long does it stay in your system .

90 days: Hair follicle tests can detect cannabis use up to 90 days based on a 1.5 inch follicle sample. If the follicle length is shorter, the detection period will likely be shorter. ...Read more

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Dr. Robert Hirschl
Board Certified, Neurosurgery
11 years in practice
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I'm not wondering how long THC stays in hair,,but I'm curious as why it stays in the hair follicle longer than blood or urine?

I'm not wondering how long THC stays in hair,,but I'm curious as why it stays in the hair follicle longer than blood or urine?

Hair stays: thc stays in the hair longer than in the blood and urine. This is because the blood is constantly being filtered (cleaned) by your kidneys and the urine is regularly eliminated from your body and replaced. Your hair, however, does not get filtered or replaced, so the thc remains. ...Read more

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Dr. Heidi Fowler
Board Certified, Psychiatry
19 years in practice
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Dr. Anthony Vita
Board Certified, Psychiatry
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Dr. Robert Killian
Board Certified, General Practice
22 years in practice
327M people helped
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How can I find out if THC is out of my hair follicles?

Drug tests and Hair: You are poorly informed. Once the drug is in the hair it does not leave. The only way to get a clean drug sample is to not have any drug use from one hair cut to another. Unless you shave your whole body a test will remain positive for the length of your hair. ...Read more

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Dr. Gregory Fehr
Board Certified, Emergency Medicine
39 years in practice
439K people helped
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Scientists have discovered any solutions that will clean THC from hair follicles?

Scientists have discovered any solutions that will clean THC from hair follicles?

THC: To clean thc from hair follicle you need to spend two year in prison, not smoking mj, don't pee, or let anyone cut your hair. Sooner or later the crimes maybe dismissed but until then, it is one of the easier drugs to pickup and no head shop can send you a "cleanse".. ...Read more

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Marijuana (Definition)

Marijuana refers to the various preparations of the Cannabis plant into the psychoactive drug for recreational use ...Read more


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Dr. Aaron Milstone
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21 years in practice
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