Metabolic
Chloride
LOINC 2075-0 · mEq/L
Ranges
Reference range: 96–106 mEq/L
What it is
Chloride is an electrolyte that works with sodium and other minerals to keep your body's fluids and acid-base balance in check.
Why it matters
It helps assess hydration, kidney function and acid-base balance, usually read with the other electrolytes.
What high values can mean
A higher value can occur with dehydration or certain kidney and acid-base conditions.
What low values can mean
A lower value can follow vomiting, certain medications or fluid shifts.
How to improve it
Chloride follows your overall fluid and electrolyte balance; staying hydrated supports normal levels.
Food & lifestyle
Balanced fluids and a normal varied diet keep chloride in range; the broader electrolyte picture matters most.
Preparing for the test
Often part of a metabolic panel; fasting is not specifically required for chloride — follow your lab.
When to talk to a doctor
An abnormal chloride is interpreted by a doctor with your other electrolytes and clinical picture.
Related markers
Sources
- MedlinePlus (NIH)
- Testing.com (AACC)
Content reviewed on June 26, 2026
Medical disclaimer
This content is for educational purposes only. It is not medical advice and does not diagnose, treat, or prevent any condition. Reference ranges vary between laboratories — always use the range printed on your report and discuss your results with a healthcare professional.
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