eng Science and Education Publishing American Journal of Medical Case Reports 2374-216X 2019-01-23 7 1 13 15 10.12691/ajmcr-7-1-4 AJMCR2019714 article Hanna M. Crow hanna.crow@okstate.edu 1 Tiffany Samples 1 Jane T. Purser 2 Department of Internal Medicine, Oklahoma State University Medical Center, Tulsa, Oklahoma, USA Department of Allergy and Immunology, University of Oklahoma, Tulsa, Oklahoma, USA Alpha-gal syndrome, also known as mammalian meat allergy, is characterized by a hypersensitivity reaction to galactose-alpha-1,3-galactose. Reactions typically manifest hours after consumption of red meat products such as beef, pork, and lamb. We describe the case of a 64-year-old male resident of rural Oklahoma who presented with anaphylaxis and myocardial infarction. The patient suffered complications that were attributed to porcine-derived heparin in the setting of undiagnosed alpha-gal syndrome. We describe the clinical course of this patient that lead to the diagnosis of alpha-gal syndrome to raise awareness of this disease. http://pubs.sciepub.com/ajmcr/7/1/4/ajmcr-7-1-4.pdf Alpha gal mammalian meat allergy heparin