title: Experiences with a statistical quality control system (QCS) for coagulation diagnostics parameters.
abstract: With the Quality-Control-Service (QCS) for blood coagulation a system for the statistical quality control of blood coagulation methods is presented. The system is based on the universal control plasma PreciClot which contains target values in the normal and abnormal range. As the control plasma is used daily from the participants for quality control exercises and datas are statistically analyzed each month this programme of quality assessment can be compared with a monthly ring trial. For the methods prothrombin time (PT/Quick), activated partial prothrombin time (APTT), fibrinogen assay (Fibrinogen) and thrombin time (Thrombin) datas of a survey period (January-December 1985) with 75 labs were evaluated. Calculated results for the methods are given and accuracy and precision of the methods are compared with the results of former ring trials. Based on the results the interlaboratory reliability of the methods is discussed and the advantages of QCS for blood Coagulation for a better information about quality of coagulation tests are presented.
authors: Boehringer Mannheim GmbH, FRG.
authors: E
authors: E
authors: Spanuth
authors: J
authors: J
authors: Breyer
mesh_terms: D001780:Blood Coagulation Tests / Q000592:standards*; D019411:Clinical Laboratory Techniques; D006801:Humans; D011786:Quality Control; D013223:Statistics as Topic