Background

• CK is an enzyme found in most muscles as well as the brain. Damage to muscles results in release of CK into the blood. Sometimes a series of CK level reports are ordered to monitor changes in levels, especially if a heart attack is suspected.
  
  

Symptoms

• CK levels may also be examined if a patient has muscle pain or weakness. Heavy and intense exercise can also result in higher levels. A venous blood sample is required.
  
  

Considerations

• Drugs such as statins and drinking alcohol can raise levels. Individuals with more muscle mass and African-Americans can also have higher levels. Trauma to muscles from accidents, surgeries and injections can also raise levels.