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A 49-year-old female asked:

False positive on urine drug screen will ketorolac or fentanyl cause a false positive for a barbituate in a urine test. previously had a blood test for drugs which was negative and was given these two medications in the hospital for pain and then give t

2 doctor answers4 doctors weighed in
Dr. Heidi Fowler
Psychiatry 25 years experience
Hello. : Hello. Ketorolac (toradol) is a nonsteroidal anti-inflammatory drug used for acute pain. Fentanyl is an opioid (narcotic) analgesic for severe pain. Neither of these are barbituates. Do not see how they would trigger a false positive on a urine drug screen.
Dr. Gary-Anthony Lawson-Boucher
Anesthesiology 22 years experience
Drug test: Fentanyl is an opiate. It will not result in a false + result. It will pop positive. Ketorolac isnt an opiate. It will pop negative.

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Last updated Jan 9, 2021

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