International Normalized Ratio (INR) calculator

An online prothrombin time to international normalized ratio (INR) calculator to find the INR ratio based on the prothrombin time of the patient. Enter the PTpatient and PTnormal and ISI (International Sensitivity Index) to know the ratio.

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An online prothrombin time to international normalized ratio (INR) calculator to find the INR ratio based on the prothrombin time of the patient. Enter the PTpatient and PTnormal and ISI (International Sensitivity Index) to know the ratio.

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Formula:

INR = (PTpatient/PTnormal)ISI Where, PTpatient = Patient's Measure PT (seconds) PTPTnormal = Laboratory's Geometric Mean Value for Normal Patients (seconds) ISI = International Sensitivity Index

Try this online prothrombin time to international normalized ratio (INR) calculator to do quick calculations on INR determining. Prothrombin: Prothrombin is a plasma protein produced in the liver in the presence of vitamin K and converted into thrombin, which is the essential enzyme in the clotting of blood.

Prothrombin Time: The prothrombin time (PT) is a test used to help diagnose bleeding or clotting disorders. The prothrombin time (PT or pro-time) is the actual time calculation, measured in seconds, for an anti-coagulated sample of plasma or whole blood to clot after it is added to a thermoplastic reagent. A prothrombin time test tells you how long it takes your blood to clot.

International Normalized Ratio (INR): International Normalized Ratio (INR), also known as Prothrombin Time (PTnormal) is a system for reporting the results of blood coagulation tests. INR calculation is based on the results of PT test that is used to monitor treatment with the blood-thinning medication warfarin. International normalized ratio (INR) is a calculation made to standardize prothrombin time.

International Sensitivity Index: International Sensitivity Index (ISI) is a value assigned by the manufacturers for the tissue factors they manufacture. The ISI value indicates how a particular batch of tissue factor compares to an international reference tissue factor. The ISI is usually between 0.94 and 1.4 for more sensitive and 2.0-3.0 for less sensitive thromboplastins.

You can just enter the required inputs in this online INR calculator to get the results within the fractions of seconds.

Note :This statistics calculator is presented for your own personal use and is to be used as a guide only. Medical and other decisions should NOT be based on the results of this calculator. Although this calculator has been tested, we cannot guarantee the accuracy of its calculations or results.

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