Alternative Names CPK test; Creatine kinase; CK test What the risks are There is very little risk involved with having your blood taken. Veins and arteries vary in size from one patient to another and from one side of the body to the other. Taking blood from some people may be more difficult than from others. Other risks associated with having blood drawn are slight but may include: Excessive bleeding Fainting or feeling light-headed Hematoma (blood accumulating under the skin) Infection (a slight risk any time the skin is broken) Special considerations Other tests should be done to determine the exact location of muscle damage. Factors that may affect test results include cardiac catheterization , intramuscular injections, trauma to muscles, recent surgery, and heavy exercise.
The CPK isoenzymes test measures the different forms of creatine phosphokinase (CPK) in the blood. CPK is an enzyme found mainly in the heart, brain, and skeletal muscle.
See also: Creatine phosphokinase test
Creatine phosphokinase - isoenzymes; Creatine kinase - isoenzymes; CK - isoenzymes
How the test is performed
Blood is typically drawn from a vein, usually from the inside of the elbow or the back of the hand. The site is cleaned with germ-killing medicine (antiseptic). The health care provider wraps an elastic band around the upper arm to apply pressure to the area and make the vein swell with blood.
Next, the health care provider gently inserts a needle into the vein. The blood collects into an airtight vial or tube attached to the needle. The elastic band is removed from your arm.
Once the blood has been collected, the needle is removed, and the puncture site is covered to stop any bleeding.
In infants or ...
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