A member asked:
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smoked marijuanua a year ago. had two haircuts in last year and hair is long now 5-6 in. it grows fast. is the substance out of my hair?

2 doctor answers
Dr. Nathan Lilya
8 years experience Family Medicine
Marijuana Hair: You should be fine after about 60 days of not smoking, so a distant past of smoking (a year ago) should render your hair clean. Good luck!
Answered on Apr 3, 2016
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1 thank
Dr. Heidi Fowler
25 years experience Psychiatry
Yes: THC hair follicle test should be negative at this point.
Answered on Nov 4, 2014

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