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A male asked:

If i have used marijuana one time ever and it was 50 days ago, would it show in a hair drug test?

1 doctor answer • 4 doctors weighed in

Dr. Randy Bakeranswered

Holistic Medicine 42 years experience

Probably not: According to NORML it is "doubtful" that a single usage of marijuana will result in a positive hair test. See http://www.canorml.org/healthfacts/drugtestguide/drugtestdetection.html for more info. Good luck!

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Last updated May 3, 2016

Found in:

Marijuana›Urine drug screen

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