137 Real-World Implementation of Latex Immunoturbidimetric Platelet Factor 4 Assay for Heparin-Induced Thrombocytopenia Diagnosis at a Large Academic Medical Center - Dareen M. Kanaan; Gabriella C. Torres; Allison L. Zhang; Katelyn W. Sylvester; Daniel Dees; Elisabeth M. Battinelli; Jean M. Connors (Research and Practice in Thrombosis and Haemostasis)