A member asked:

I have stop smoking weed and i have clean my system and can it be still stored in my hair right now?

A doctor has provided 1 answer

Yes: It stays in your hair as long as your hair is there. Testing by hair usually involves the hair about 1 1/2 to 2 inches from the scalp. Testing this area will detect use within about 90 days.

Answered 5/17/2015

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Thank

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Does weed smoking cause hair loss?

A doctor has provided 1 answer