Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Definition of Hirudin
Medically reviewed by Dr. Otari Nergadze, Neurosurgeon | Updated: January 2026
Hirudin: An anticlotting agent that prevents blood clots from traveling through the bloodstream to clog up a vessel (thromboembolic complications). Hirudin is the main chemical in the secretion of leeches that allows them to suck out blood freely from the body after they attach to the skin. Desirudin and lepirudin (brand name: Refludan) are genetically engineered recombinant forms of hirudin.
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