title: Pitfall in HPLC assay for urinary metanephrines: an unusual type of interference caused by methenamine intake.
authors.affiliation: Department of Medical Oncology, University Medical Centre Nijmegen, Nijmegen, The Netherlands. h.vanlaarhoven@onco.umcn.nl
authors.forename: Hanneke W M
authors.initials: HW
authors.lastname: van Laarhoven
authors.forename: Jacques J
authors.initials: JJ
authors.lastname: Willemsen
authors.forename: H Alec
authors.initials: HA
authors.lastname: Ross
authors.forename: Louk V A M
authors.initials: LV
authors.lastname: Beex
authors.forename: Jacques W M
authors.initials: JW
authors.lastname: Lenders
authors.forename: Fred C G J
authors.initials: FC
authors.lastname: Sweep
mesh_terms: D000310:Adrenal Gland Neoplasms / Q000175:diagnosis; D001132:Arm / Q000098:blood supply; D002395:Catecholamines / Q000097:blood; D002851:Chromatography, High Pressure Liquid; D003937:Diagnosis, Differential; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D008676:Metanephrine / Q000097:blood / Q000652:urine*; D008709:Methenamine / Q000652:urine*; D008875:Middle Aged; D010673:Pheochromocytoma / Q000175:diagnosis; D011655:Pulmonary Embolism / Q000175:diagnosis / Q000652:urine; D013923:Thromboembolism / Q000175:diagnosis / Q000652:urine
chemical_list: D002395:Catecholamines; D008676:Metanephrine; D008709:Methenamine