Heparin is the commonly used anticoagulant in cardiac surgery. All of the following are true about heparin except: (A) Weakest acid found in living beings, (B) Most commercial preparations of heparin are derived from pig intestine, (C) Acts antithrombin activation, (D) Produce thrombocytopenia
Answer is A. Refer KDT 6/e p 597 Heparin is the strongest organic acid found in human being It acts by activating AT-3 that inhibits factor CA and 2a Most commercial preparations of heparin are derived from ox lung and pig intestine