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A doctor will want to look at your INR history and won't generally consider a single INR measurement because the result may be transient due to something you ate the day before the test. It could also be that the test was incorrect. Warfarin is usually given once per day and the dose adjusted to put your INR in the target range.


What Is a Normal Blood INR Level? Normal international normalized ratio, or INR, levels for individuals who are not on anticoagulant medication range between 0.9 and 1.1. Patients who are on blood thinning medications typically have elevated INR levels between 2 and 3.5, according to the American Association for Clinical Chemistry.


INR test results explained. The INR test result is given as a number, which is a ratio of: The test sample’s Prothrombin time (a protein made by the liver and the time it takes to clot the blood) To: The Prothrombin time of a normal sample of blood; A result of 1.0, up to 1.5, is therefore normal.


PT INR – Range, Normal, High, Test Results Interpretation. admin Medical Tests 0. INR is an abbreviated form for International Normalized Ratio. It is a ratio used to find out the blood clotting ability of an individual. ... Bilirubin Levels – Normal, High, Low admin 0. Be the first to comment Leave a Reply Cancel reply. Your email address ...


The prothrombin time (PT) is a test used to help diagnose bleeding or clotting disorders. The international normalized ratio (INR) is a calculation based on results of a PT that is used to monitor treatment with the blood-thinning medication warfarin (Coumadin®).


Understanding the PT-INR Test. Marie B. Walker January, 2004 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.


INR levels can be difficult to control. Although regular testing of INR levels is essential for all people taking warfarin to maintain control of the INR, in practice, INR levels show considerable intra-patient variability.


Description: International normalized ratio(INR) takes results from a prothrombin time test and standardizes it regardless of collection method. What would cause increased levels? Disseminated ...


The international normalised ratio (INR) is a laboratory measurement of how long it takes blood to form a clot. It is used to determine the effects of oral anticoagulants on the clotting system. Devised in 1983, the INR provides a standardised method of reporting the effects of an oral anticoagulant such as warfarin on blood clotting.


Low INR Levels. At a low INR Level, you're at risk for clots, and your blood is "thicker". A low INR Level is relative to your target INR range. If your INR Level is 1.9 and your target INR range is 2 to 3, then it's slightly low and your blood is "slightly thick".