CASE REPORTSNever too soon to be thinking about heparin-induced thrombocytopenia! A case report of early onset heparin-induced thrombocytopeniaSaid, Bassil N. Author Information State University of New York at Stony Brook, Stony Brook, New York, USA Correspondence to Bassil N. Said, MD, Stony Brook university Hospital, Stony Brook, NY, USA 11794. E-mail: [email protected] Received 5 January, 2023 Accepted 11 February, 2023 Blood Coagulation & Fibrinolysis 34(4):p 244-246, June 2023. | DOI: 10.1097/MBC.0000000000001210 Buy Metrics Abstract Heparin-induced thrombocytopenia (HIT) is a serious complication that can affect a small percentage of patients receiving heparin. Atypical HIT presentations like delayed onset HIT have been described. We present an atypical case of early onset HIT in a patient presenting with ACS with no prior heparin exposure and shed light on the various atypical HIT and HIT-like presentations. Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.