Below the range
Common causes of a low Anion Gap
- Hypoalbuminemia
- Lab measurement variation
Looking for the other direction? See what causes a high Anion Gap.
All tests · Electrolytes & Minerals · Anion Gap
Below the range
What causes a low Anion Gap?
Normal range 8-16 mEq/L (8-16 mmol/L SI). Specimen: Serum or plasma (calculated). See the full Anion Gap reference page for critical values and nursing considerations.
What is the normal range for Anion Gap?
The standard teaching reference range for Anion Gap is 8-16 mEq/L in conventional units, or 8-16 mmol/L in SI units. This value is measured in serum or plasma (calculated).
| Specimen | Serum or plasma (calculated) |
|---|---|
| Conventional range | 8-16 mEq/L |
| SI range | 8-16 mmol/L |
| Panel | Electrolytes & Minerals |
Full details, including nursing considerations, on the Anion Gap normal range page. Reference ranges vary by laboratory, method, age, sex, and population - always use the range printed on the actual result.
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