This tests uses powerful magnets to look inside the body. Computer-generated pictures can image the heart muscle, identify damage from a heart attack, diagnose certain congenital heart defects and evaluate disease of larger blood vessels such as the aorta. This modified form of imaging records pictures of the heart and its blood vessels by computer. The actual diagnosis of a heart attack must be made by a physician who has studied the results of several tests. Sometimes a blood test is used to detect abnormal levels of certain enzymes in the bloodstream.
High levels are a large factor in clogging arteries.
Your blood pressure is checked each time you donate and cholesterol levels are checked periodically.