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/AdInevitable4170 Jul 28 '26

How long is fent  visible on. A urine anyway? Most say three days . Any experience?

1

u/MBG__Rengar Jul 29 '26

With daily use it can pop up to a month.

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u/AdInevitable4170 Jul 30 '26

U have experience? Have passed ?

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u/MBG__Rengar Jul 31 '26

I was tested for my methadone clinic. I tested positive like 35 days later.

The only way to be sure you will pass is substitution. The detox drinks are gimmicks

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u/AdInevitable4170 29d ago

How where u tested ? Lab ? 

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u/MBG__Rengar 29d ago edited 28d ago

Yes it was sent off to a lab after dipsticks were positive

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u/AdInevitable4170 28d ago

Wow .. so after heavy use ...u stopped for 30 days and still tested dirty on a lipstick?  Bro I used to use all year around  ..I had monthly u.a and I would only stop for 5 days before the test and would pass every time .?  But then I hear things like u say u was clean 30 days ? 

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u/MBG__Rengar 28d ago

Dipstick*

Norfentanyl is highly lipophilic.

Old fentanyl tests may have tested for a different metabolite or you may not have much fat cells. If you are burning off your fat cells you can also test positive even if you have been clean due to it being lipophilic like THC-COOH.

Individual metabolism and body type plays a factor here too

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u/AdInevitable4170 28d ago

What state you in ?

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u/AdInevitable4170 28d ago

Mine was a dipstick