title: Normalization does not improve between-laboratory agreement but may improve specificity of some assays for activated protein C resistance.
authors.forename: I
authors.initials: I
authors.lastname: Jennings
authors.forename: S
authors.initials: S
authors.lastname: Kitchen
authors.forename: T A
authors.initials: TA
authors.lastname: Woods
authors.forename: F E
authors.initials: FE
authors.lastname: Preston
mesh_terms: D001681:Biological Assay / Q000592:standards*; D004351:Drug Resistance; D005165:Factor V / Q000235:genetics; D006801:Humans; D019934:International Normalized Ratio; D009154:Mutation; D011486:Protein C / Q000378:metabolism / Q000494:pharmacology*; D012016:Reference Values; D019851:Thrombophilia / Q000097:blood / Q000175:diagnosis* / Q000235:genetics
chemical_list: D011486:Protein C; C095381:factor V Leiden; D005165:Factor V