title: The importance of imprecision.
authors.affiliation: Department of Biochemical Medicine, Ninewells Hospital and Medical School, Dundee, Scotland, UK.
authors.forename: C G
authors.initials: CG
authors.lastname: Fraser
authors.forename: P H
authors.initials: PH
authors.lastname: Petersen
mesh_terms: D002624:Chemistry, Clinical / Q000592:standards*; D003657:Decision Making; D006801:Humans; D011786:Quality Control; D012016:Reference Values; D015203:Reproducibility of Results; D013048:Specimen Handling