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



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