A female asked:
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i gave my friend urine to pass a drug test and it said she failed for opiates. i dont understand how when i dont do any kind of drugs at all.

1 doctor answer
Dr. Ankush Bansal
16 years experience Internal Medicine
False positives: There are other meds and a few food items that can cross react in the test and give a false positive. They may do a confirmatory test to check for specific opiate meds. However, that is despicable that you helped a friend pass a drug test by cheating rather than advising her to lay off any drugs since the test obviously was planned ahead of time.
Answered on Oct 1, 2014

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