To evaluate if there is a difference in International Normalized Ratio (INR) readings taken within the 15 second time frame after lancing the finger vs 30-60 seconds of obtaining a blood drop utilizing a CoaguChek® XS Plus point-of-care (POC) INR machine in patients on warfarin therapy.


 INR readings taken 30-60 seconds after obtaining a blood drop with the CoaguChek® XS Plus POC INR machine is not acceptable for use to monitor patients on warfarin.
CoaguChek
To evaluate if there is a difference in International Normalized Ratio (INR) readings taken within the 15 second time frame after lancing the finger vs 30-60 seconds of obtaining a blood drop utilizing a CoaguChek® XS Plus point-of-care (POC) INR machine in patients on warfarin therapy.


 INR readings taken 30-60 seconds after obtaining a blood drop with the CoaguChek® XS Plus POC INR machine is not acceptable for use to monitor patients on warfarin.
CoaguChek
To evaluate if there is a difference in International Normalized Ratio (INR) readings taken within the 15 second time frame after lancing the finger vs 30-60 seconds of obtaining a blood drop utilizing a CoaguChek® XS Plus point-of-care (POC) INR machine in patients on warfarin therapy.


 INR readings taken 30-60 seconds after obtaining a blood drop with the CoaguChek® XS Plus POC INR machine is not acceptable for use to monitor patients on warfarin.
CoaguChek