RT Journal Article SR Electronic T1 Heparin-Induced Thrombocytopenia (HIT): A Case Study JF American Society for Clinical Laboratory Science JO Clin Lab Sci FD American Society of Chemistry and Laboratory Science SP 5 OP 11 DO 10.29074/ascls.23.1.5 VO 23 IS 1 A1 Newkirk, Catherine E. YR 2010 UL http://hwmaint.clsjournal.ascls.org/content/23/1/5.abstract AB Heparin-induced thrombocytopenia (HIT) ranges from an asymptomatic reaction to heparin with a transient mild thrombocytopenia (HIT I) to a life- and limb-threatening immunological reaction, heparin-induced thrombocytopenia with thrombosis (HITT or HIT II). HITT can occur in patients with any heparin exposure and must be recognized and treated quickly and appropriately to prevent symptomatic and/or fatal thrombosis. HIT will be discussed using a case study approach.ABBREVIATIONS: APTT = activated partial thromboplastin time; AT = anti-thrombin; 14C = carbon-14; CT = computerized topography; DTI = direct thrombin inhibitor; Fc = fragment crystallizable; FDA = Food and Drug Administration; HIPA = heparin-induced platelet aggregation; HIT = heparin-induced thrombocytopenia; HITT = heparin-induced thrombocytopenia with thrombosis; IgG = immunoglobulin G; INR = international normalized ratio; IU/ml = international units per milliliter; IV = intravenous; LMWH = low-molecular-weight heparin; PF4 = platelet factor 4; RBC = red blood cell; SC = subcutaneous; SRA = serotonin release assay; UFH = unfractionated heparin.