A member asked:

Have a hair drug test coming up, will be 90 days @ test, hair is under required amount, i am body hair from under arm, or chest, all new hair chances?

A doctor has provided 1 answer

Depends: Scalp used for analysis needs to be at least 1.5 inches for testing. Body hair can be used for drug testing but it is not useful in determining the timeframe of use as growth rates on the body are highly variable.

Answered 2/6/2015

3.3k views

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