Low Molecular Weight Heparin

**Semantic type:** Chemical Viewed Functionally

**Definition:** Substances comprised of fragmented heparin molecules derived from unfractionated heparin that bind to antithrombin III with a molecular weight ranging from 1000 to 10,000 daltons, which causes changes in property from unfractionated heparin, including decreased protein binding, enhanced bioavailability, decreased platelet interaction, and decreased binding to thrombin.

**Synonyms:** - LMWH - Low-molecular-weight heparin