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