Creatine Kinase (CK), Total

Creatine kinase (CK) is an enzyme found in muscles and other tissues that plays a key role in energy metabolism. When tissues are damaged or injured, such as during a heart attack or muscle injury, CK is released into the bloodstream. A total CK test measures the overall level of CK in the body and can help diagnose conditions that cause muscle damage or stress on the heart. Increased levels of CK may indicate muscle damage, inflammation, or conditions affecting the heart or brain. The normal range for total CK levels can vary depending on age, gender, and activity level. Your healthcare provider may order a total CK test if you have symptoms of muscle weakness, pain, or inflammation, or if you have risk factors for heart disease. Treatment for elevated CK levels will depend on the underlying cause and may involve medications, lifestyle changes, or other interventions.