Above the range
Common causes of a high Bicarbonate (CO₂ content)
- Metabolic alkalosis
- Vomiting or gastric suction
- Compensation for respiratory acidosis
Looking for the other direction? See what causes a low Bicarbonate (CO₂ content).
All tests · Electrolytes & Minerals · Bicarbonate (CO₂ content)
Above the range
What causes a high Bicarbonate (CO₂ content)?
Normal range 22-29 mEq/L (22-29 mmol/L SI). Specimen: Serum or plasma. See the full Bicarbonate (CO₂ content) reference page for critical values and nursing considerations.
What is the normal range for Bicarbonate (CO₂ content)?
The standard teaching reference range for Bicarbonate (CO₂ content) is 22-29 mEq/L in conventional units, or 22-29 mmol/L in SI units. This value is measured in serum or plasma.
| Specimen | Serum or plasma |
|---|---|
| Conventional range | 22-29 mEq/L |
| SI range | 22-29 mmol/L |
| Critical value | < 15 or > 40 mmol/L |
| Panel | Electrolytes & Minerals |
Full details, including nursing considerations, on the Bicarbonate (CO₂ content) 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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