title: Multiple and simultaneous phenotyping tests: beware of ascorbic acid when determining the mephenytoin (S)/(R) ratio.
authors.forename: C B
authors.initials: CB
authors.lastname: Eap
authors.forename: T
authors.initials: T
authors.lastname: Buclin
authors.forename: P A
authors.initials: PA
authors.lastname: Buchwalder
authors.forename: N
authors.initials: N
authors.lastname: Gutmann
authors.forename: P
authors.initials: P
authors.lastname: Baumann
mesh_terms: D001205:Ascorbic Acid / Q000378:metabolism*; D002110:Caffeine / Q000652:urine; D003577:Cytochrome P-450 Enzyme System / Q000032:analysis; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008658:Inactivation, Metabolic / Q000235:genetics*; D007527:Isoenzymes / Q000032:analysis; D008617:Mephenytoin / Q000652:urine*; D010641:Phenotype; D011110:Polymorphism, Genetic / Q000235:genetics*; D013237:Stereoisomerism
chemical_list: D007527:Isoenzymes; D002110:Caffeine; D003577:Cytochrome P-450 Enzyme System; D001205:Ascorbic Acid; D008617:Mephenytoin