Factor VIII of blood coagulation. Antihemophilic factor that is part of the factor VIII/von Willebrand factor complex. Factor VIII is produced in the liver and acts in the intrinsic pathway of blood coagulation. It serves as a cofactor in factor X activation and this action is markedly enhanced by small amounts of thrombin.

Synonyms: HyattC, F VIII-C, Factor 8 C, Coagulation Factor VIII, Factor VIII, Factor VIII Procoagulant Activity, 9001-27-8, Factor VIII Clotting Antigen, Hyate C, Factor VIII Coagulant Antigen, Hyatt-C, 0, HyateC, F VIII C, Factor 8, Blood-coagulation factor VIII, complex, Thromboplastinogen, Factor VIIIC, Blood Coagulation Factor VIII, Factor Eight, Hyatt C, Hyate-C