Fig. 2From: Replacement of traditional prothrombin time monitoring with the new Fiix prothrombin time increases the efficacy of warfarin without increasing bleeding. A review articleCorrelation of Fiix-normalized ratio with undiluted Owren’s PT-INR (SPA, Stago, Asnieres, France: upper panel) or undiluted Quick PT-INR (Neoplastin, Stago, Asnieres, France: lower panel) in samples from patients on stable warfarin therapy. Previously unpublished data from the study described in Thrombosis Research 2012;130:674–81 [3].Back to article page