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.

Related Questions

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?

Cannabis. Single use of marijuana should be out of your urine in 1 to 7 days. Regular use of marijuana – should be out of urine in 7 to 100 days. Single use marijuana can be detected 12 to 24 hours in blood. Regular use marijuana can be detected for 2 to 7 days in blood. Marijuana regular use detected in hair for months. Single use might not be picked up in hair. Read more...
Well... Blood and urine are filtered rapidly. The hair has a longer life and there are no filters, so the THC stays until the hair falls. Read more...
Hair testing. Hair follicles trap and filter traces of the drug in their growth period. And as the gradual growth of hair is inevitable, these chemicals are found to be stored in the hair and can be found during the hair drug test.When compared with urine specimen testing, hair testing provides nearly twice the number of positives and a longer detection window. Read more...
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...

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...

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...