Which lab test result is indicative of myocardial necrosis?

Elevated troponin levels are indicative of myocardial necrosis because troponin is a protein found in cardiac muscle. When there is damage to the heart muscle, such as during a myocardial infarction (heart attack), troponin is released into the bloodstream, making it a specific and sensitive biomarker for myocardial injury.

In clinical practice, elevated levels of troponin are used to diagnose acute coronary syndrome and are significant indicators of heart muscle damage, particularly when compared to the normal ranges. This makes troponin a key component in assessing a patient's cardiac health and determining the appropriate interventions needed following an event like a heart attack.