title: Letter: Diphenylhydantoin interference with spectrophotometric barbiturate estimations.
mesh_terms: D001463:Barbiturates / Q000097:blood*; D002849:Chromatography, Gas; D005069:Evaluation Studies as Topic; D006801:Humans; D010634:Phenobarbital / Q000097:blood; D010672:Phenytoin; D013056:Spectrophotometry, Ultraviolet
chemical_list: D001463:Barbiturates; D010672:Phenytoin; D010634:Phenobarbital