NCIt definition : The calcium salt form of heparin. As a glycosaminoglycan anticoagulant, heparin calcium
binds to antithrombin III to form a heparin-antithrombin III complex. The complex
binds to and irreversibly inactivates thrombin and other activated clotting factors
IX, X, XI, and XII and prevents the transformation of fibrinogen to fibrin. (NCI);