What does "CPK-MB" mean in a report or doctor's letter? In our medical dictionary, you will find a patient-friendly explanation of the meaning of this medical term.
CPK-MB is a type of protein found mainly in the heart. When the heart is damaged, such as during a heart attack, levels of CPK-MB rise in the blood. Doctors can measure these levels to help determine if a person has had a heart attack. It's one of several tests that can assist in diagnosing heart conditions.
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