A member asked:

Tried cocaine one time 9 months ago. took an armpit hair follicle test. will that go back farther than 90 days?

A doctor has provided 1 answer
Dr. Randy Baker answered

Specializes in Holistic Medicine

While hair follicle tests can show evidence of drug use from several weeks ago, it shouldn't show use more than 90 days ago. Also, using only once will probably not result in high enough residues to show up. So the odds are you'll pass with no problem, but if it's positive be honest about this incident. They are screening for those with habitual drug abuse, not someone who used once 9 months ago.

Answered Aug 1, 2020

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Hair follicle drug test, do they test it on your armpit?

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