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Creatine Phosphokinase Muscle/Brain (CPK MB), Serum

The Creatine Phosphokinase muscle/brain (CPK-MB), serum test measures the level of an enzyme found mainly in the heart and, to a lesser extent, in skeletal muscles. It is commonly used to help diagnose a heart attack or muscle injury. High levels of CPK-MB in the blood usually indicate damage to the heart muscle, such as heart attack.

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