Diagnostic tests

Coagulation factor test

A coagulation factor test is a laboratory test that measures the level of specific proteins in the blood that are involved in the clotting process. There are several different types of coagulation factor tests that can be ordered, including prothrombin time (PT), partial thromboplastin time (PTT), and international normalized ratio (INR). These tests are typically ordered to assess the clotting ability of the blood and to help diagnose and monitor various medical conditions that affect the clotting process, such as bleeding disorders, liver disease, and certain medications. The test is usually performed on a sample of blood that is drawn from a vein in the arm.

This page is provided for educational and informational purposes only and does not constitute the provision of medical advice or professional services. The information provided should not be used for diagnosing or treating a health problem or disease, and those seeking personal medical advice regarding any of the tests and conditions referenced above are advised to consult with a licensed clinician. Always seek the advice of your qualified health provider regarding a medical condition and do not disregard professional medical advice or delay in seeking it because of any information on this page. If you think you may have a medical emergency, immediately call 911 or go to the nearest urgent care center or hospital.

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