Chloride is an electrolyte involved in maintaining fluid balance and regulating pH levels. Testing for chloride levels is necessary to assess electrolyte imbalances, kidney function, or certain medical conditions. Monitoring chloride levels helps diagnose and manage conditions such as dehydration, kidney disorders, or blood pH imbalances. Monitoring chloride level is important in situations like persistent vomiting and/or diarrhoea. Chloride imbalances may occur with changes in levels of the other electrolytes.