CPK
Alternate Names : CK, Creatine Kinase, Creatine Phosphokinase
DefinitionA CPK is a blood test that measures creatine phosphokinase (CPK), an enzyme found predominantly in the heart, brain, and skeletal muscle. When the total CPK level is substantially elevated, it usually indicates injury or stress to one or more of these areas.
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Why is the Test Performed?
When a muscle is damaged, CPK leaks into the bloodstream. Determining which isoenzyme (specific form of CPK) is elevated will help determine which tissue has been damaged.
This test may be used for the following reasons:
Repeated checks of CPK levels may be performed. The pattern and timing of a rise and/or fall in CPK levels can be diagnostically significant, particularly if a heart attack is suspected.
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