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A 35-year-old male asked:

I dont ever smoke marijuana. but i took one hit from a joint 2 weeks ago. i have to take a hair follicle drug test in 4 days. will i pass it ?

1 doctor answer • 2 doctors weighed in
Dr. Lynne Weixel
Dr. Lynne Weixelanswered
Clinical Psychology 38 years experience
Hard to say: Hair testing is very powerful (1pg/mg) and reflects drug use over the past 90 days (depending on the length of hair available). A shaved head or razor cut might remove evidence of activity from 2 weeks ago. One hit may be too little to worry about, but I can't say I know. If it's very important - you might want to tell them the truth. This sounds like an unintended outcome if you're being honest.
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Dr. Bruce Genter
Dr. Bruce Genter agrees1 doctor agrees

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Last updated Apr 19, 2018

Found in:

Marijuana›Urine drug screen

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