CPK isoenzymes test

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Blood test

Creatine phosphokinase - isoenzymes; Creatine kinase - isoenzymes; CK - isoenzymes

Factors that can affect test results include cardiac catheterization, intramuscular injections, recent surgery, and vigorous and prolonged exercise or immobilization.

Drugs that can increase CPK measurements include the following:

• Amphotericin B
• Ampicillin
• Some anesthetics
• Anticoagulants
• Aspirin
• Clofibrate
• Dexamethasone
• Furosemide
• Morphine
• Alcohol
• Cocaine

Isoenzyme testing for specific conditions is about 90% accurate.

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.