Antithrombin (AT) is a small glycoprotein that inactivates several enzymes of the coagulation system. It is a 464-amino-acid protein produced by the liver.

Antithrombin is a plasma protein that inhibits thrombin and factors Xa, IXa, and XIa, thereby inhibiting thrombosis. Heterozygous deficiency of antithrombin has a prevalence of …

Nov 23, 2021 · Antithrombin (antithrombin III) deficiency is a blood clotting problem that can put you at risk for a dangerous blood clot. When you have this deficiency, clotting can continue …

Jul 22, 2023 · Antithrombin is a protein in our blood, which functions as a naturally occurring anticoagulant. It is like a police protein that prevents us from clotting too much. It blocks our …

Antithrombin (AT), also known as antithrombin III, is defined as a naturally occurring protease inhibitor that maintains balance in the coagulation system by inactivating various coagulation …

Aug 27, 2025 · Deficiency of antithrombin (AT; antithrombin III) can be inherited or acquired; it is defined as an AT activity level that is consistently less than 80 percent of normal (or the lower …

Dec 3, 2025 · Antithrombin is a protein circulating in the bloodstream that maintains the fluidity of the blood. Produced in the liver, it acts as the body’s primary anticoagulant, preventing the …

Antithrombin works as a mild blood thinner so that the blood doesn't clot too much. A lack of antithrombin (AT) can make it more likely for you to form blood clots.

Antithrombin (AT), an anticlotting substance occurring in the plasma of blood that functions primarily to block the action of thrombin, an enzyme central to coagulation—the process by …

Antithrombin is a protein produced by the liver to help control blood clotting. Normally, when a blood vessel is injured, the body activates a series of coagulation factors, in a process called …