Hirudin is an anticoagulant protein that occurs naturally in the saliva of Hirudo medicinalis. This substance is composed of 66 to 66 amino acids. Currently, 7 isomers have been isolated and it has the advantages of high activity and stable structure.
The saliva of live leeches contains a variety of anticoagulant components. Such as hirudin, hirudin-PA, antithrombin, heparin. In addition, it also contains enzymes and enzyme inhibitors, a variety of amino acids and trace elements.
Due to the controllable production and purity of recombinant hirudin, its clinical application is more extensive.
| Items | Specifications | Result |
| Assay | ≥580IU/Gram | 600IU/Gram |
| Appearance | Brownish grey powder | Complies |
| Odor & taste | Characteristics | Complies |
| Mesh size | 100% pass 80mesh | Complies |
| Solubility | Soluble in water | Complies |
| Loss on drying | ≤5.0% | 1.12% |
| Heavy metals | <20ppm | Complies |
| Total Plate Count: | <1000cfu/g | Complies |
| Yeast & Mold: | <100cfu/g | Negative |
| E.Coli: | Negative | Complies |
| S. Aureus: | Negative | Complies |
| Salmonella: | Negative | Complies |
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