Creatine kinase 470 U/L is considered high. Creatine kinase, also known as creatine phosphokinase, is a kinase that plays an important role in intracellular energy conversion, muscle contraction, etc. It is one of the cardiac muscle enzyme tests, and is mainly used for the diagnosis of diseases related to cardiac muscle and skeletal muscle. Typically, it ranges from 38 to 174 U/L in men and 26 to 140 U/L in women, so 470 U/L is considered high. A high level of creatine kinase suggests that the subject may have damage to cardiac and skeletal muscle cells, and may be suffering from diseases such as acute myocardial infarction, viral myocarditis, and skeletal muscle injury. 1. Acute myocardial infarction: When the test subject suffers from acute myocardial infarction, the damaged cardiac muscle cells release creatine kinase into the bloodstream, resulting in increased levels of creatine kinase in the blood. 2. Viral myocarditis: when the subject suffers from viral myocarditis, the inflammation involves the heart muscle, and the level of creatine kinase in the blood will be significantly increased. 3. Skeletal muscle injury: it is common that the skeletal muscle is damaged after improper movement during strenuous exercise or after being subjected to intense external force, a large number of skeletal muscle cells are destroyed, and the internal creatine kinase thus enters into the bloodstream, resulting in an increase in creatine kinase level. Abnormal creatine kinase index, need to timely consult a doctor, refer to the doctor’s advice.