Introduction : Platelet and lymphocyte are crucial in acute myocardial infarction (AMI) pathogenesis. Platelet-lymphocyte ratio (PLR) is a systemic biomarker which indicates thrombosis and inflammation. The diagnosis of AMI can be made by detecting elevated blood troponin I levels. The correlation between PLR and troponin I levels in ST-segment elevation myocardial infarction (STEMI) patien…