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Medical Health Encyclopedia
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Blood test
Blood test


CPK isoenzymes

Alternative Names:
Creatine phosphokinase - isoenzymes; Creatine kinase - isoenzymes; CK - isoenzymes

What abnormal results mean:

Higher-than-normal CPK-1 levels may occur with the following:

Higher-than-normal CPK-2 levels may occur with the following:
  • Heart attack
    • There is a significant rise in CPK-2 levels in the first 2 - 3 hours after a heart attack. This test is used to diagnose a heart attack.
    • Text Continues Below



      The extent of the elevation depends on the severity of the heart attack. CPK levels may remain elevated up to 24 hours after a heart attack, and sometimes even longer.

  • Myocarditis (inflammation of the heart muscle usually due to a virus)
  • Electrical injuries
  • Trauma to the heart (for instance, from a car accident)
  • Heart defibrillation (purposeful shocking of the heart by medical personnel)
  • Open heart surgery

Higher-than-normal CPK-3 levels may occur with the following:

  • Crush injuries of skeletal muscle
  • Multiple intramuscular injections
  • Muscular dystrophy
  • Myositis (skeletal muscle inflammation)
  • Post-electromyography (a test of nerve and muscle function)
  • Recent seizures
  • Recent surgery
  • Rhabdomyolysis (skeletal muscle damage due to drugs or prolonged immobilization)
  • Strenuous exercise


A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org).

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 2004 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

 







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