SHORT COMMUNICATIONAnalytic variability due to change of deficient plasma vials: application to one-stage clotting factor VIII assayNougier, Christophe; Sobas, Frédéric; Nguyen, Thi K; Carage, Marie L; Lienhart, Anne; Négrier, ClaudeAuthor Information Hemostasis Laboratory, Edouard Herriot Hospital, Lyon, France Received 29 September, 2010 Revised 15 November, 2010 Accepted 20 November, 2010 Correspondence to Frédéric Sobas, Haemostasis Laboratory, Edouard Herriot Hospital, Place d'Arsonval, 69 437 Lyon, France Tel: +33 4 72 11 73 69; fax: +33 4 72 11 73 12; e-mail: [email protected] Blood Coagulation & Fibrinolysis: March 2011 - Volume 22 - Issue 2 - p 151-154 doi: 10.1097/MBC.0b013e328343300e Buy Metrics Abstract The statistical process control required under International Organization for Standardization 15189 as well as economic considerations necessitates having robust methods that do not need systematic recalibration for each series of analyses. Using the concrete example of one-stage clotting factor VIII assay, we assessed the analytic variability specifically linked to changing factor VIII deficient plasma vials. The study used freeze-dried (Instrumentation Laboratory, Siemens, Stago and T-Coag) and frozen (Affinity Biologicals and Precision Biologic) factor VIII deficient plasmas. On the most widely recognized acceptability criteria and methods (i.e. those of Kallner et al. and Kasper et al.), the Stago and Instrumentation Laboratory plasmas require systematic recalibration at each vial changeover. © 2011 Lippincott Williams & Wilkins, Inc.