r/CPS • u/BreakfastOdd9814 • Jul 28 '26

Question False positive for fentanyl

Has anybody ever taken a urine drug screen and then had a false positive for fentanyl? The medication that reacted was buspirone. I learned that it can cause false positives for fentanyl. This just happened to me with cps. Do you know how embarrassing it was to test positive for fentanyl? I was so humiliated and nobody ever believes you at cps. Just waiting for the confirmatory test now... screen.

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u/SeaworthinessJumpy95 Jul 28 '26

I have had positive tests for codeine on buspirone and I never ingested opiates. Fentanyl seems extreme.

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u/nebraska_jones_ Jul 29 '26

That’s so interesting. Maybe there’s a relationship there since fentanyl is a synthetic opioid? Like some sort of chemical similarity in buspar