Urine Drug Screens - Common drugs that may cause false positive tests Amphetamines: Bupropion, Labetalol, Methylphenidate, Phenylephrine, Promethazine, Pseudoephedrine, Ritodrine, Ranitidine Selegiline, Trazodone Benzodiazepine: Sertraline Cannabinoids: Efavirenz, Proton pump inhibitors Cocaine: Topical anesthetics containing cocaine Opioids: Dextromethorphan, Diphenhydramine, Naloxone, Quinine, Quinolones, Rifampin, Phencyclidine (PCP): Dextromethorphan, Diphenhydramine, Ibuprofen, Ketamine, Tramadol, Venlafaxine Tricyclic Antidepressants (TCA): Carbamazepine, Cyclobenzaprine, Diphenhydramine #Urine #DrugScreens #UDS #Laboratory #Toxicology #Diagnosis #FalsePositive #Testing
