How Accurate Are Hair Follicle Drug Test With Telling Time When Last Smoked?

Question by Danielle :p: How accurate are hair follicle drug test with telling time when last smoked?
If im going to get tested soon and i smoked two weeks ago will it make much of a difference in the results if i smoke again before the test?

Best answer:

Answer by izzy
Marijuana is harder to identify unless there have been multiple uses.

General info…
“If the sample as 1.5 inches long, the rule of thumb dictates that up to 90 days of drug abuse history can be ascertained. People who are contemplating shaving their heads to evade the test could use the fact that body hair could also be used to test for drugs. The result of the tests is not affected by the use of bleaches or shampoos of any kind. It would be comforting to know that second hand smoke of weed is not detected in hair follicle drug testing.”

I would put off smoking until after the test if possible, although you might get away with it if it is only once. Is it worth the worry?

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