On the other hand, as the INR decreases below a given level, the risk of clotting events increases. In other words, as the INR increases above a given level, the risk of bleeding and bleeding-related events increases. The higher your INR is, the longer it takes your blood to clot. First, an individual whose blood clots normally and who is not on anticoagulation should have an INR of approximately 1. There are a few things worth mentioning about the INR. So, the INR is really just the standard unit used to report the result of a PT test. As its name suggests, one INR result can be compared to another INR result regardless of how or where the result was obtained. INR stands for International Normalized Ratio. These standard units are known as INR units. To account for the different reagents, the result of a PT test must be converted into standard units that can be compared regardless of the reagent used. Since each of these reagents works a bit differently, a PT result obtained with one reagent cannot be compared to a PT result obtained with another reagent. There are a variety of reagents that can be used when a PT test is performed. The PT result is the time in seconds that is required for the blood to clot. The reagent causes the blood to begin clotting. At the lab, a substance called a reagent is added to your blood. The traditional method for performing a PT test is to have your blood drawn and sent to a lab. It is a measure of how quickly blood clots. This article will attempt to explain the PT-INR test.įirst let's talk about the PT test. If you have ever undergone oral anticoagulation therapy, you have most likely heard of the PT-INR test, but you may not understand what it is and/or what it means. Click here to learn more about the Coalition to Prevent Deep Vein Thrombosis and DVT Awareness Month, which is held each March. ClotCare complies with the HONcode standard for trustworthy healthĬlotCare is a member organization of the Coalition to Prevent Deep Vein Thrombosis.
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