Preferred biochemical markers in patients presenting with myocardial infarction September 2008: (A) Myoglobin, (B) Cardiac specific Troponins, (C) CK-MB, (D) All of the above
Answer is B. As. B: Cardiac specific Troponins Creatine kinase (CK) muscle and brain (CK-MB) mass and myoglobin measurements were the standard up to the mid-1990s, when assays for the cardiac-specific isoforms of troponin I and troponin T became available. They are now the preferred biochemical markers. They may rise to levels more than 20 times higher than the upper reference limit. Their levels may remain elevated for 7-10 days after STEMI