Point-of-care (POC) coagulation analyzers that measure prothrombin time/international normalized ratio (PT/INR) on fingerstick capillary blood are used to support the monitoring of patient oral anticoagulant therapy (OAT) with vitamin K antagonists. These agents include warfarin (Coumadin), phenprocoumon (Marcumar) and acenocoumarol (Sintrom, also sold as other brand names).Â
