Muscle enzymes are proteins in the muscles, including the heart, that allow them to function normally. They help nourish and strengthen the muscles and get rid of waste material from the muscles. They are essential for overall good health.
Creatine kinase is an enzyme found in most muscles. There are different types of this enzyme. The one called CK-MB is usually present in the cells of the heart muscle, and CK-MM is present in both the heart and the muscles of the skeleton. A blood test is used to show muscle enzymes present in the blood. If the enzymes are high, there is muscle damage in the body. Blood tests for the cardiac muscle enzymes are helpful in diagnosing a heart attack. Other diseases also cause muscle damage and high muscle enzymes.