Coagulation Factor II

Coagulation Factor II, also known as prothrombin, is a protein in the blood essential for blood clotting. When you bleed, prothrombin is converted into thrombin, an enzyme that helps turn fibrinogen into fibrin, forming a stable clot to stop bleeding. Proper levels of prothrombin are crucial; too little can cause excessive bleeding, while too much may increase the risk of abnormal blood clots. It’s produced by the liver and depends on vitamin K for proper function. Blood tests measuring prothrombin levels help diagnose bleeding disorders or monitor anticoagulant therapy.