Heart disease: Any disorder that affects the heart. Sometimes the term  heart disease  is used narrowly and incorrectly as a synonym for coronary artery disease.Heart disease is synonymous with cardiac disease but not with cardiovascular disease which is any disease of the heart or blood vessels.mong the many types of heart disease, see, for example: Angina; Arrhythmia; Congenital heart disease; Coronary artery disease (CAD); Dilated cardiomyopathy; Heart attack (myocardial infarction); Heart failure; Hypertrophic cardiomyopathy; Mitral regurgitation; Mitral valve prolapse; and Pulmonary stenosis.
The alanine aminotransferase (ALT) test is typically used to detect liver injury. It is often ordered in conjunction with aspartate aminotransferase (AST) or as part of a liver panel to screen for and/or help diagnose liver disease.
This blood test measures an enzyme called aspartate aminotransferase (AST). Enzymes are chemicals that help the cells of your body work. AST is found in red blood cells, liver cells, and muscle cells, including the heart. It is released into the blood when these cells are damaged. This enzyme is also called serum glutamic-oxaloacetic transaminase, or SGOT. The AST level is measured to check the liver, kidneys, heart, pancreas, muscles, and red blood cells. This test is also done to check medical treatments that may affect the liver.