Cardiac enzymes ― also known as cardiac biomarkers ― include myoglobin, troponin and creatine kinase. Historically, lactate dehydrogenase, or LDH, was also used but is non-specific.

This includes hospital triage, ECG and a cardiac enzyme test. The heart muscle starts to die after 90 minutes, and irreversible changes occur after six hours. However, many doctors are not good at ...