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Corrected Sodium Calculator
Adjust measured sodium for high glucose (hyperglycemia).
Corrected sodium
—
For hyperglycemia.
| Measured sodium | — |
|---|---|
| Glucose | — |
| Correction | — |
| — |
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Enter your figures above to see the step-by-step working.
Educational estimate — not medical adviceEverything computed client-side — nothing leaves this page
How the Corrected Sodium Calculator Works
High blood glucose pulls water into the bloodstream, diluting sodium and making the measured value look falsely low. The corrected sodium estimates what the level would be at a normal glucose. The traditional Katz factor adds 1.6 mEq/L of sodium for every 100 mg/dL that glucose sits above 100. With a measured sodium of 130 and glucose of 400, the corrected sodium is about 134.8.
This correction matters in diabetic emergencies like DKA and HHS, where treating the glucose will shift the sodium. Some clinicians prefer the Hillier factor of 2.4 in very high glucose ranges. This is an educational estimate, not a treatment tool.
corrected Na = measured Na + 1.6 × (glucose − 100) ÷ 100
Frequently Asked Questions
Why correct sodium for glucose?
High glucose dilutes the blood and lowers measured sodium. The correction estimates the true sodium once glucose is normalized, which guides treatment.
What factor does this use?
The Katz factor of 1.6 mEq/L per 100 mg/dL of glucose above 100. Some use the Hillier factor of 2.4 at very high glucose levels.
When is this used?
In hyperglycemic emergencies such as DKA and HHS, to anticipate how sodium will change as glucose is brought down.
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