title: False-positive barbiturate test in urine owing to phenytoin and 5-(p-hydroxyphenyl)-5-phenylhydantoin.
authors: Toxicol. Lab., Veterans Administration Med. Center, Albany, NY 12208.
authors: K S
authors: KS
authors: Siff
authors: A E
authors: AE
authors: Finkler
mesh_terms: D001463:Barbiturates / Q000652:urine*; D005189:False Positive Reactions; D006801:Humans; D007118:Immunoassay; D010672:Phenytoin / Q000031:analogs & derivatives* / Q000652:urine*; D011786:Quality Control
chemical_list: D001463:Barbiturates; C001419:hydroxyphenytoin; D010672:Phenytoin