Prothrombin (Factor II)

Prothrombin, also known as Factor II, is a protein in your blood essential for clotting. When you get a cut, prothrombin is converted into thrombin, which helps form a blood clot to stop bleeding. It’s produced in your liver and works with other clotting factors to maintain proper healing and prevent excessive bleeding or clot formation. Proper levels of prothrombin are crucial for balanced blood clotting; too low can cause bleeding problems, while too high can increase the risk of abnormal blood clots.