Troponin serum Cardiac troponin T : 0.2 ug/L Cardiac troponin I : <3.1 ug/L to diagnose Myocardial Infarction earlier than traditional cardiac enzyme studies (Troponin T&I) Acute Myocardial Infarction (troponin T) Renal failure Muscle Trauma Rhabdomyolysis Polymyositis Dermatomyositis Hemolysis of specimen