<prompt> Most sensitive and specific marker for MI is?TroponinCytokeratinMyoglobinCPK-MM  <response>: Ref: Harrison 20th edition, P 384Cardiac specific markers of myocardial damage include quantitative determination of CK-MB, Troponin I and Troponin T. Troponins can become elevated by 3 hours. The circulating values remain elevated up to a week. 