Antithrombin III. Antithrombin III-Alpha . Atenativ . Heparin Co-Factor I . Kybernin . Serpin C1 . Thrombate III . Antithrombin III Alpha . Antithrombin IIIAlpha . Cofactor I, Heparin . Heparin Co Factor I . Heparin Cofactor I . Antithrombin II . 0.49