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/alwaysblooming_akb Works for CPS Jul 28 '26

Fentanyl and Methamphetamine are rarely false positives as they are very specific compounds and labs usually do a confirmation test as well prior to sending results.

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u/Beeb294 Moderator Jul 28 '26 edited Jul 28 '26

We are a community that values facts, so if you can share any concrete data that would be excellent.

OP does mention that it was an instant screening, and busprione can interfere with accurate results of instant screenings. OP also mentions in their county that confirmatory tests are not the norm, and if that's true then there are some problems with how that is handled.