Serum chlorideFrom our partner site on breast cancer, MyBreastCancerNetwork.com.
Serum chloride test measures the amount of chloride in serum, the fluid portion of the blood. How the test is performed: Blood is drawn from a vein or capillary. The laboratory centrifuges the blood to separate the cells from the serum. The chloride test is done on serum. How to prepare for the test: advertisement Your doctor may instruct you to withhold drugs that can affect the test, such as:
Never stop taking medication unless instructed by your doctor. Why the test is performed: Chloride (Cl-) is the major negative ion in the fluid outside the body's cells. Its main function is to maintain electrical neutrality, mostly as a counter-ion to sodium. Changes in the chloride level often accompany sodium losses and excesses.
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