Prothrombin Time (PT) is a blood test that measures the time it takes for plasma to clot. The test specifically evaluates the presence and activity of factors I (fibrinogen), II (prothrombin), V, VII, and X, which are essential components of the blood clotting process. PT is often used in conjunction with its derived measure, the International Normalized Ratio (INR), to monitor and assess disorders related to abnormal blood clotting.
