Myoglobin - Serum
Alternate Names : Serum Myoglobin
Definition
This is a test that measures the amount of myoglobin in the blood.
Myoglobin is a protein in heart and skeletal muscles. When a muscle is exercised, it uses up available oxygen. Myoglobin has oxygen bound to it, thus providing an extra reserve of oxygen so that the muscle can maintain a high level of activity for a longer period of time.
When muscle is damaged, myoglobin is released into the bloodstream. Ultimately, it is excreted in the urine (see Urine myoglobin).
Why is the Test Performed?
Myoglobin levels may be obtained to confirm suspected muscle damage, including heart and skeletal muscle damage.
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