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(A) published PT INR data from Fisher Diagnostics 1999 [40] and with (B) published aPTT data from Kappert 2002 [41]. Reagents used in aPTT reference studies: Pathromtin® SL (SL; Behringwerke AG, Marburg, Germany) and Behring Coagulation Time (BCT). aPTT, activated partial thromboplastin time; INR, international normalized ratio; PT, prothrombin time.
