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A member asked:
I have just had a drug hair strand test, would nytol give a false positive result?
A doctor has provided 1 answer
False positive: Nytol is diphenhydramine. Diphenhydramine can cause false positive result for methadone or phencyclidine (PCP). Hopefully you mentioned all medications you were taking at the time of the drug test.
Answered 1/26/2017
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