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A 36-year-old female asked:

Can i have a strand of my daughter's hair tested to see if marijuana is being smoked around her?

2 doctor answers4 doctors weighed in
Dr. Sophia Yen
Pediatrics 26 years experience
No.: You can test it, but it should only reflect her smoking. Not "around her." however the main question is whether you trust your daughter to tell you the truth. And that is the more important thing. So perhaps see a family therapist or ask her to tell you the truth b/c you care/love her. And hopefully she will tell you.
Created for people with ongoing healthcare needs but benefits everyone.
Dr. Dariush Saghafi
Neurology 35 years experience
Yes to hair testing: Concentrations of marijuana found in hair can be used to determine whether or not someone is an active smoker or user vs. Just being around it passively. You've got about 90 days to get your data from the time of last smoking. Need about 1.5 in. Of the hair taking from the end of the strands.
Created for people with ongoing healthcare needs but benefits everyone.
Dr. Eric Weisman
Neurology 38 years experience
You can also discuss the matter with her as I'm sure you have done. If you send off a hair sample and it comes back with a positive result you may have a new problem (loss of trust)
Apr 27, 2014
Last updated Apr 27, 2014


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