What Is a Chloride Blood Test? The chloride blood test, sometimes called a Cl test or serum chloride test, is a simple blood test that measures your chloride levels. Why do chloride levels matter? You ...

Hypochloremia is a condition in which you have low levels of chloride in your blood. If someone has hypochloremia, they often have hyponatremia as well, which is too little sodium (another electrolyte ...