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A member asked:
How sensitive is a hair follicle drug test?
A doctor has provided 1 answer
Very: In comparison to a urinalysis drug test, cocaine, PCP, opiates, and methamphetamine have proven hair analysis far more effective than urine testing in identifying low-level drug use over an extended period of time since these are normally out of the bloodstream in within 3-7 days The detection of marijuana is currently less sensitive than the other drugs in identifying low level drug users,
Answered 3/19/2020
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