AST is also called glutathione, which is an enzyme that is widely present in the liver and heart muscle cells, and once elevated, it indicates damage to the liver or heart muscle. Once this occurs, other ancillary tests are needed to confirm the diagnosis, such as electrocardiogram, cardiac ultrasound, serum cardiac enzymes, which include glutathione, and other enzymes, such as phosphatase, phosphocreatine kinase isoenzyme and troponin I, to determine the degree of myocardial damage. In addition, coronary angiography and nuclear myocardial imaging are most important to determine the site, area and size of myocardial damage and necrosis. To determine the next step of treatment.