Diphenhydramine interferes with determination of phencyclidine by gas-liquid chromatography.
D002849:Chromatography, Gas / Q000379:methods; D004155:Diphenhydramine / Q000032:analysis*; D006801:Humans; D010622:Phencyclidine / Q000032:analysis*
D004155:Diphenhydramine; D010622:Phencyclidine