title: Factor VIII (antihemophilic factor) assay results in the 1976 College of American Pathologists Survey Program.
abstract: Data from the 1976 CAP Survey for the performance of Factor VII (antihemophilic factor) assays were analyzed. The results indicated an undesirable variation on both normal and abnormal specimens. Reagent-instrumentation systems and procedures were examined. The need for standardization of factor VIII assays is evident from the results of this study.
mesh_terms: D001322:Autoanalysis / Q000592:standards; D001780:Blood Coagulation Tests / Q000379:methods*; D005069:Evaluation Studies as Topic; D005169:Factor VIII / Q000032:analysis*; D006801:Humans; D007202:Indicators and Reagents / Q000592:standards; D007753:Laboratories / Q000592:standards; D013677:Medical Laboratory Science / Q000592:standards; D010336:Pathology; D012015:Reference Standards; D012955:Societies, Medical; D013925:Thromboplastin / Q000502:physiology / Q000592:standards; D014481:United States
chemical_list: D007202:Indicators and Reagents; D005169:Factor VIII; D013925:Thromboplastin