Test guide

Chloride Blood Test

A chloride blood test measures the amount of chloride in your blood. Chloride is a type of electrolyte. Electrolytes are electrically charged minerals that help control the amount of fluids and the balance of acids and bases (pH balance) in your body. You have electrolytes in your blood, urine, tissues, and other body fluids.

For everyone & professionalsReviewed 2026-10-18

What it is for

You usually get a chloride test as part of a routine blood screening to check your general health. It's also used to help monitor or diagnose conditions related to an imbalance of acids or fluids in your body. Source: MedlinePlus, National Library of Medicine. Medical test information is public domain. Source identity and definition checked automatically on 2026-10-18. No individual clinical interpretation or human reviewer is asserted.

Limitations

Reference intervals and interpretation depend on the laboratory, specimen, method and clinical context. This source definition is educational information; it does not establish a diagnosis, product approval or suitability for an individual.

Also known as

  • CI, Serum chloride

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