Chloride
Chloride is an electrolyte that, together with sodium, maintains fluid balance and the acid-base balance of the blood. It mostly changes in parallel with sodium.
| Rating | Range | What it means |
|---|---|---|
| Talk to a doctor | below 98 mmol/L | Below the limit — seek advice. |
| Good | 98 – 107 mmol/L | Within the reference range. |
| Talk to a doctor | 107 mmol/L and above | Above the limit — seek advice. |
Why it matters
Interpret with sodium and bicarbonate.
If it’s low
Low chloride often accompanies vomiting or certain metabolic (alkalotic) disorders.
If it’s high
High chloride often accompanies dehydration or certain metabolic (acidotic) disorders; it is rarely an isolated problem.
What to do
Interpret chloride with sodium and the acid-base status — on its own it rarely guides action. A doctor addresses abnormalities in context.
Read together with
Sodium · Potassium
Part of the guide: Kidneys & electrolytes →
Articles about this marker
This content is for information only and is not a substitute for medical advice. Talk to your doctor about your results.
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