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.

Troponin is more specific and sensitive than CK, as cardiac troponin only increases ... A CK test is usually used alongside other tests, including other muscle enzyme tests, to diagnose a medical ...