... positive in the urine test but not the hair test. She is on the following medications but I can't find a site that tells me if any of these pills can show a false positive for methadone. We talked to the pharmacist and he said go online and I still can't find anything. Can someone please help me she has had her custody suspended because of this test. Medications: proair hfa inhaler, seroquel, morphine sulfate, alprazolam, combivent INH, oxycontin, Azithromycin, Cymbalta, florastor, hydrocodon-acetaminophen, levaquin, metronidazole, omeprazole-bicarb