What is heparin?

Heparin occurs naturally as a macromolecule complexed with histamine in mast cells Heparin standard is an injectable, rapidly acting anticoagulant that is often used acutely to interfere with the formation of thrombin. -Unfractionated heparin is a mixture of straight-chain, anionic Glycosaminoglycans (Glycosamin + uronique acid) with a wide range of molecular weights It is strongly acidic because of the presence of sulfate and carboxylic acid groups