Marker of myocardial necrosis with levels above normal within 1 to 3 hours of the onset of myocardial injury but is no longer detectable within 12-18 hours.
Skeletal muscle disorders, strenuous exercise, renal failure, intramuscular injections and cardiac bypass surgery can elevate levels.
Heavy use of ethanol can elevate serum myoglobulin levels.
Levels increase with age and are higher in African American men than in white men.