What Is a Therapeutic INR?

The international normalized ratio (INR) is the ISI power of the ratio of the patient's prothrombin time to the normal control prothrombin time (ISI: International Sensitivity Index, which is calibrated by the manufacturer when the reagent leaves the factory). Enzyme reagent method for standardized reporting of prothrombin time measurements. The same specimen was tested in different laboratories with different ISI reagents. The results of plasma prothrombin time values were very different, but the measured INR values were the same, which made the measured results comparable. At present, the international emphasis on using INR to monitor the amount of oral anticoagulants is a better way of expression.