What Does Phentermine Show Up On A Drug Test As - Web diphenhydramine may show up as a false positive for some opioids. The original result will then be ruled a false positive. Some reports have also shown that diphenhydramine may result in a false positive for pcp. Typical doses of diphenhydramine may not cause a false positive. This will signal the need for a confirmatory test, which will then show that it was phentermine and not amphetamine or methamphetamine. Since phentermine has a similar structure to amphetamines, a urine drug screen can test positive for amphetamines. But it’s not clear what dose of diphenhydramine would cause a false positive.
This will signal the need for a confirmatory test, which will then show that it was phentermine and not amphetamine or methamphetamine. Since phentermine has a similar structure to amphetamines, a urine drug screen can test positive for amphetamines. But it’s not clear what dose of diphenhydramine would cause a false positive. Typical doses of diphenhydramine may not cause a false positive. The original result will then be ruled a false positive. Web diphenhydramine may show up as a false positive for some opioids. Some reports have also shown that diphenhydramine may result in a false positive for pcp.