CPK isoenzymes test

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Blood test

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CPK-2 levels rise 3 - 6 hours after a heart attack. If there is no further damage to the heart muscle, the level peaks at 12 - 24 hours and returns to normal 12 - 48 hours after tissue death. CPK-2 levels do not usually rise with chest pain caused by angina, pulmonary embolism (blood clot in the lung), or congestive heart failure.

The CPK-3 isoenzyme is normally responsible for almost all CPK enzyme activity in healthy people. When this particular isoenzyme is elevated, it usually indicates injury or stress to skeletal muscle.

Review Date: 01/22/2007
Reviewed By: Benjamin W. Van Voorhees, MD, MPH, Assistant Professor of Medicine and Pediatrics, The University of Chicago, Chicago, IL. Review provided by VeriMed Healthcare Network.

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