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Does haircolor affect hair tests for drugs?

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Wiki User
2011-03-11 21:09:36

yes in that all drugs except THC will bind to the melanin of the

hair so if for example a red head doesn't have the same melanin as

a black haired person and it is the black and brown range that it

binds to so the same amount can be given to a red head and a black

haired person the black hair will show higher levels.


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