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What does an INR correspond to?

An INR is a test that measures the time it takes for your blood to clot. This test is often used for individuals taking anticoagulant medications, like Coumadin, to ensure they are within the therapeutic range. An INR value of 1 is normal for someone not taking anticoagulants, while the therapeutic range for individuals taking Coumadin is typically between 2 and 3.5. The variability in INR results can be influenced by factors such as diet, other medications, and changes in lifestyle habits. It may take time to stabilize an individual's INR levels while on Coumadin, but gradual adjustments can help achieve consistency.