The chloride ion is formed when the element chlorine picks up one electron to form the anion (negatively charged ion) Cl−. The salts of hydrochloric acid HCl contain chloride ions and are also called chlorides. An example is table salt, which is sodium chloride with the chemical formula NaCl. In water, it dissolves into Na+ and Cl− ions.

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... Why get tested?
To determine if there is a problem with your body''s electrolyte or acid-base balance and to monitor treatment

When to get tested?
As part of a standard electrolyte panel or metabolic panel or if your doctor thinks that you have an electrolyte imbalance

Sample required?
A blood sample drawn from a vein in the arm or a urine sample
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The chloride ion is formed when the element chlorine picks up one electron t ...
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