A 53-year-old female asked:
can someone taking morphine sulfate test positive for fentanyl in a saliva drug test , although they have never taken fentanyl ever?
1 doctor answer • 7 doctors weighed in
Pain Management 36 years experience
Yes,: Both drugs in the same class (opioids) so they will both show up the same. Fentanyl is a synthetic opioid and much stronger than morphine. When testing for Morphine, it will show positive for morphine metabolites or fentanyl. Take care.
3899 viewsReviewed >2 years ago
Last updated Aug 2, 2014
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