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A member asked:

I think my daughter is using drugs but her screens are clean. if she has her menstral blood in the sample can i test to see if shes using even if she used someones clean urine?

A doctor has provided 1 answer

Possibly,: in certain applications, jobs, military, witnessed urination is required to insure no substitution of urine happens.

Answered 12/5/2019

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