title: Measurement of urinary porphobilinogen and porphyrins: preliminary data from a pilot QA scheme.
authors.affiliation: Department of Chemical Pathology & Immunology, Leeds General Infirmary, UK.
authors.forename: K R
authors.initials: KR
authors.lastname: Allen
authors.forename: P A
authors.initials: PA
authors.lastname: Rushworth
authors.forename: T J
authors.initials: TJ
authors.lastname: Degg
authors.forename: J H
authors.initials: JH
authors.lastname: Barth
mesh_terms: D002624:Chemistry, Clinical / Q000379:methods; D003306:Coproporphyrins / Q000652:urine; D006801:Humans; D010865:Pilot Projects; D011162:Porphobilinogen / Q000652:urine*; D017119:Porphyria Cutanea Tarda / Q000175:diagnosis; D017118:Porphyria, Acute Intermittent / Q000175:diagnosis; D017094:Porphyrias, Hepatic / Q000175:diagnosis; D011166:Porphyrins / Q000652:urine*; D011785:Quality Assurance, Health Care; D015203:Reproducibility of Results
chemical_list: D003306:Coproporphyrins; D011166:Porphyrins; D011162:Porphobilinogen