what is normal inr range
The normal range for a healthy person not using warfarin is 0.8â1.2, and for people on warfarin therapy an INR of 2.0â3.0 is usually targeted, although the target INR may be higher in particular situations, such as for those with a mechanical heart valve.his test is also called ProTime INR and PT/INR. They are used to determine the clotting tendency of blood, in the measure of warfarin dosage, liver damage, and vitamin K status. PT measures factors I (fibrinogen) , II (prothrombin) , V, VII, and X.