Most sensitive and specific marker for MI is?: (A) Troponin, (B) Cytokeratin, (C) Myoglobin, (D) CPK-MM
Answer is A. 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.