RT Journal Article SR Electronic T1 Heparin-induced thrombocytopenia JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP S31 OP S36 VO 72 IS 4 suppl 1 A1 Bartholomew, John R. A1 Begelman, Susan M. A1 Almahameed, Amjad YR 2005 UL http://www.ccjm.org/content/72/4_suppl_1/S31.abstract AB Heparin-induced thrombocytopenia (HIT) is a potentially devastating complication of therapy with either unfractionated or low-molecular-weight heparin. Thrombocytopenia is no longer essential for the diagnosis of HIT, since a 50% drop in the platelet count may be a more specific indicator. Once HIT is clinically suspected, heparin should be stopped immediately and direct thrombin inhibitor therapy started; waiting for laboratory confirmation may be catastrophic.