Test guide
Electrolyte Panel
Electrolytes are minerals that have an electrical charge when they are dissolved in water or body fluids. You have electrolytes in your blood, urine, tissues, and other body fluids. They are important because they help:
What it is for
An electrolyte panel is often part of a routine blood screening or a comprehensive metabolic panel . The test may also be used to find out if your body has a fluid imbalance or an imbalance in acid and base levels. Electrolytes are usually measured together. But sometimes they are tested individually. Separate testing may be done if your health care provider thinks that there might an imbalance of a specific electrolyte. 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
- serum electrolyte test, electrolyte blood test, electrolyte lab test, lytes, sodium (Na), potassium (K), chloride (Cl), carbon dioxide (CO2)
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