What is the role of lactate dehydrogenase in diagnosing myocardial infarction?

A It is an enzyme that breaks down glucose to produce energy
B It is a marker enzyme that indicates tissue damage ✓
C It is an enzyme that catalyzes the conversion of lactate to pyruvate
D It is an enzyme that inhibits the production of ATP

Explanation

Lactate dehydrogenase is a marker enzyme that is released into the bloodstream when tissue damage occurs, such as in myocardial infarction. Elevated levels of lactate dehydrogenase can indicate tissue damage and are used as a diagnostic tool.

Source

Harper's Biochemistry
Enzymes in Disease Biochemistry Enzyme Markers of Disease Medium MEDICAL Confidence: high