False positive drug test

Posted by tippy202 @tippy202, Mar 26 4:41pm

My wife has had 4 false positives for fentanyl. Every time its sent to a lab and has came back clean. What can cause this?

Hi, @tippy, and welcome to Mayo Clinic Connect. Sounds like your wife is getting unexpected results, testing positive for fentanyl when she didn't believe it was in her system. How frustrating.

Will you share more about the context for the testing? Was this a test strip she self-administered, or a test in another context?

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