A CPK test is performed to determine the total CPK level in your body. CPK isoenzyme testing can assist in determining the exact source of the damaged tissue.
CPK is made of three slightly different substances:
- CPK-1 (also known as CPK-BB) is mostly seen in the lungs and brain
- CPK-2 (also known as CPK-MB) is mostly seen in the cardiac muscle
- CPK-3 (also known as CPK-MM) is seen in skeletal muscle
This test is used to:
✔ help in diagnosing a heart attack.
✔ evaluate the cause of chest pain.
✔ determine if or how badly a muscle is damaged.
✔ to detect dermatomyositis, polymyositis, and other muscle diseases.
✔ tell the difference between malignant hyperthermia and postoperative infection
the pattern and timing of a rise or fall in CPK levels can be significant in making a diagnosis. This is particularly true if a heart attack is suspected.