Cardiac Biomarkers

See individual tests for reference ranges.
■ Enzymes, proteins, and hormones used in the diagnosis of acute
myocardial infarction.
■ Biomarkers rise, peak, and return to normal in predictable time
frames allowing health care providers to monitor the progress of
the infarction.
■ These laboratory tests include:
◆ Albumin cobalt binding
◆ Creatinine kinase (CK) (or creatine phosphokinase) and CK-MB
isoenzyme (less frequently used)
◆ Troponin (most widely used to assess heart damage)
◆ Myoglobin (less frequently used; may be ordered with
troponin)
◆ B-type natriuretic peptide (used to assess heart function)