False Positives on Drug Tests - AskDocWeb Many cross-reactivities exist with other analytes, potentially causing a false-positive result in an initial drug screen. List of drugs that cause false positives on drug tests with reference sources and. has been able to document as causes of a false positive drug test result. Phenergan® - false positive for THC, Methadone References 3, 16, 18, and 43
Prescription Drugs That Lead To False Positive Marijuana Drug. Knowledge of these potential interferents is important in determining a course of action for patient care. Information on medications and prescription drugs trgering a false positive drug test. Other drugs and medications including Phenergan®, Promethazine.
Promethazine and False Positive Pregnancy Tests - pregnancytest. According to a news report from the Los Angeles Times New Service, a study of 161 prescription and over the counter medications showed that 65 of them produced false positive drug test results in the most widely administered urine drug test procedure. Promethazine and False Positive Pregnancy Tests. doctor about getting a blood test if negative test, I'd probably just wait and test again later.
Medications That Will Test Positve for THC LIVESTRONG. COM Medications & substances causing false positives according to a report by the los angeles times new service, a study of 161 prescription and over the counter medications showed that 65 of them produced false positive results in the most widely administered urine test. This allows for false-positive test results trgered by the metabolites of. promethazine may produce false-positive results in THC drug tests.
Drug Testing – False Positives for Urine Testing Promethazine in my experience has never showed on a drug screen (UA) as anything. A false positive urine test result can have three possible sources. antihistamines containing Promethazine Mallergan, Phenergan.
False positive results for phenergan:
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