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A 37-year-old female asked:

I had a urine test and tested positive for methadone and i do not take methadone . is there any medications that can cause a false positive?

2 doctor answers5 doctors weighed in
Dr. Deepika Goshike
Family Medicine 25 years experience
Yes: Medications like benadryl, (diphenhydramine) ibuprofen, seroquel, verapamil, chlorpromazine, clomipramine, thioridazine, doxylamine can cause false positives for methadone.
Dr. Humberto Quintana
Psychiatry 44 years experience
Yes, a large nunber: Reports of false-positive uds results potential for false-positive uds results was identified for the following medication classes: antihistamines, antidepressants, antibiotics, analgesics, antipsychotics. Reports of false- . -positive uds results was identified for the following medication classes reports of false-positive uds results were found for 25 (21.5%) of 116 formulary medications. Th.

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Last updated Jun 4, 2018

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