Creatine kinase-BB

Creatine kinase-BB (CK-BB) is an enzyme found mainly in the brain and other tissues. Enzymes like CK-BB help produce energy in cells by facilitating chemical reactions. When brain tissue is damaged, such as in a stroke or injury, CK-BB can leak into the bloodstream. Measuring CK-BB levels in the blood can help doctors assess brain injury or neurological conditions. While it’s a useful marker, CK-BB levels alone are not definitive and are usually considered alongside other tests and clinical evaluations for accurate diagnosis.