🧂 Hyperglycemia-Corrected Sodium
Correct measured sodium for hyperglycemia to reveal the true sodium status.
Clinical takeaway
Hyperglycemia causes dilutional (pseudo) hyponatremia.
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When to use
Avoid misreading dilutional hyponatremia in hyperglycemic patients.
How it works
Katz: Na + 0.016 × (glucose mg/dL − 100). Hillier: Na + 0.024 × (glucose mg/dL − 100), closer at severe hyperglycemia.
Key points
- Hyperglycemia causes dilutional (pseudo) hyponatremia.
- The corrected value predicts sodium once glucose is normalized.
- Recheck electrolytes during glucose correction.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Measured sodium | 130 mmol/L |
|---|---|
| Glucose | 30 mmol/L |
→Corrected Na (Katz)137.0mmol/L
- Corrected Na (Hillier)：140.6 mmol/L
- Measured Na：130.0 mmol/L
Frequently asked questions
- What is Hyperglycemia-Corrected Sodium?
- Correct measured sodium for hyperglycemia to reveal the true sodium status.
- How is Hyperglycemia-Corrected Sodium calculated? What is the core formula?
- Katz: Na + 0.016 × (glucose mg/dL − 100). Hillier: Na + 0.024 × (glucose mg/dL − 100), closer at severe hyperglycemia.
- When is Hyperglycemia-Corrected Sodium used?
- Avoid misreading dilutional hyponatremia in hyperglycemic patients.
- What are the key clinical points for Hyperglycemia-Corrected Sodium?
- Hyperglycemia causes dilutional (pseudo) hyponatremia. The corrected value predicts sodium once glucose is normalized. Recheck electrolytes during glucose correction.
- What are the limits and cautions when using Hyperglycemia-Corrected Sodium?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- How is Hyperglycemia-Corrected Sodium calculated in practice? Can you show a worked example?
- Inputs: Measured sodium 130 mmol/L, Glucose 30 mmol/L → Result: Corrected Na (Katz) 137.0 mmol/L（Corrected Na (Hillier): 140.6 mmol/L, Measured Na: 130.0 mmol/L）