Serum transaminase; a test to aid in diagnosis of cardiac infarction.

Within 24 hours following myocardial infarction there is a pronounced increase in the level of the enzyme glutamic-oxalacetic transaminase found in the serum. This enzyme can be detected in serum by a rapid and convenient procedure. An increase in the level of serum transaminase is typical of only a few pathological conditions all of which can readily be distinguished from myocardial infarction by other methods.