What do I do if I have an abnormal PT test?
Consuming foods and drinks that can interact with warfarin, such as kale, spinach, cranberry juice, and alcohol. Taking over-the-counter medicines, such cold medicines, or vitamin supplements, that can interact with warfarin. If you are taking warfarin and have a PT result outside of the 2.0 to 3.0 range this is considered abnormal. A disorder called disseminated intravascular coagulation, in which the proteins that control blood clotting are overactive. If your INR is above 1.1, your blood is clotting more slowly than normal. What can cause PT test results to be outside the normal range? Prothrombin time test results are given in a measurement called an INR (international normalized ratio).įor patients on warfarin, the therapeutic range is 2.0 to 3.0. Check for signs of bleeding disorders that can cause bleeding issues, such as hemophiliaĪ PT test checks the speed at which your blood clots. Discover the cause of abnormal bruising or bleeding. Other reasons you may be given a PT test are to: 
Blood clots can cause serious conditions, such as deep venous thrombosis or pulmonary embolism. The most common reason for PT tests is to monitor your blood levels if you are taking the blood-thinner warfarin. If your healthcare provider suspects this, he or she may recommend a PT test. If your blood clots more slowly or more quickly than that, you may have a clotting problem. The average time it takes for blood to clot is 10 to 14 seconds. Why is a prothrombin time (PT) test done? Sometimes this test is called an INR (International Normalized Ratio) or ProTime test. Clotting refers to the formation of the blood and proteins into a solid mass to stop bleeding. This liquid portion of the blood is called plasma.
A prothrombin time (PT) test measures the time it takes for the liquid portion of your blood to clot.
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