Heparin Calcium

**Semantic type:** Organic Chemical|Pharmacologic Substance

**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)

**Synonyms:** - Calciparine - HEPARIN CALCIUM