What happens when inr is high?
The test result for PT depends on the method used, with results measured in seconds and compared to the average value in healthy people. Most laboratories report PT results that have been adjusted to the International Normalized Ratio (INR). Patients on anti-coagulant drugs should have an INR of 2.0 to 3.0 for basic “blood-thinning” needs. For some patients who have a high risk of clot formation, the INR needs to be higher – about 2.5 to 3.5. Your doctor will use the INR to adjust your drug to get the PT into the range that is right for you. A prolonged, or increased, prothrombin time means that your blood is taking too long to form a clot. If you are not taking anti-coagulant drugs and your PT is prolonged, additional testing may be necessary to determine the cause. The higher value means that your clotting factor is not that good, could be due to aspirin, coumadin, or other blood thinners. It is usually higher in patients who have to take blood thinners due to heart attacks and strok
