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The International Normalized Ratio (INR) is a universal measurement used to determine how fast your blood clots. Think of it as a stopwatch for your body's internal repair system. When you get a cut or injury, your body naturally forms a clot to stop the bleeding. The INR measures how long this process takes. It's especially important for people taking certain medications, like warfarin, which are meant to slow down the clotting process. By monitoring your INR, healthcare professionals can adjust your medication to maintain your clotting time within a safe and effective range.
If Your Levels Are High
A high INR level means that your blood is taking longer than normal to clot, which could be due to various reasons. For example, it might be because you're taking medications like blood thinners (such as warfarin) that are meant to slow down clotting. It could also mean that your liver, which is responsible for making clotting proteins, isn't working as well as it should. Another possibility is that your diet, like eating lots of vitamin K-rich foods, is affecting your INR levels. While a high INR can increase the risk of bleeding, it doesn't always mean there's a major issue; it just means that it's worth looking into what might be causing it.
Symptoms of High Levels
Symptoms of high levels of INR could include unusual bruising, prolonged bleeding from minor cuts, nosebleeds, blood in urine or stool, or unusually heavy menstrual periods.
If Your Levels are Low
A low INR means your blood is clotting faster than normal, which could be due to various reasons like changes in your diet, exercise habits, or the presence of certain medications in your body. It might also indicate an underlying health issue, such as liver disease or a lack of specific clotting factors. Keep in mind that a low INR doesn't guarantee you'll develop blood clots, but it does show that your blood is clotting quicker than usual at this moment.
Symptoms of Low Levels
Symptoms of low levels of INR could include unusual bruising, blood in urine or stool, frequent nosebleeds, or prolonged bleeding from minor cuts or injuries.
This test measures prothrombin time to evaluate and monitor coagulation disorders.
PT with INR by Access Med Labs
Plasma
This test measures prothrombin time to evaluate and monitor coagulation disorders. Starting February 1, 2024, samples for this test must be shipped on dry ice.
Prothrombin Time with INR by Quest Diagnostics
Plasma
This test is often recommended for individuals who are on Warfarin therapy or those who may have symptoms or a family history of clotting disorders.