🧪 Corrected Sodium for Hyperglycaemia
Correct measured sodium for hyperglycaemia to reveal the true sodium status.
Corrected Sodium for Hyperglycaemia
Measured sodium (mmol/L)
Glucose (mg/dL)
When to use
Interpret sodium in patients with marked hyperglycaemia (e.g. DKA/HHS).
How it works
Corrected Na = measured Na + 1.6 × (glucose − 100)/100 (mg/dL); the 2.4 factor (Hillier) is often better at glucose > 400.
Key points
- Hyperglycaemia dilutes serum sodium.
- Use corrected sodium to judge true hypo-/hypernatraemia.
- Reassess as glucose falls with treatment.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.