Educational reference only. Not a diagnostic tool. See full disclaimer.
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RenalNa⁺ Correction
Sodium Correction for Hyperglycemia
Correct sodium for elevated glucose levels.
Input
mEq/L
mg/dL
Corrected Na⁺ (Katz)
—
Corrected Na⁺ (Hillier)
—
About
In hyperglycemia, water shifts from intracellular to extracellular space due to the osmotic effect of glucose, diluting serum sodium. The corrected sodium estimates what the sodium level would be if glucose were normal. This is important for assessing true sodium status in patients with diabetic ketoacidosis (DKA) or hyperosmolar hyperglycemic state (HHS).
Formula
Katz (1973): Corrected Na = Measured Na + 1.6 × [(Glucose − 100) / 100]
Hillier (1999): Corrected Na = Measured Na + 2.4 × [(Glucose − 100) / 100]
Glucose in mg/dL. The Hillier formula may be more accurate at very high glucose levels.
Interpretation
| Corrected Na (mEq/L) | Interpretation |
|---|---|
| < 135 | Hyponatremia |
| 135 – 145 | Normal |
| > 145 | Hypernatremia |
FAQ
Disclaimer
Educational and informational reference only. Not intended to replace professional medical advice, diagnosis, treatment, or independent verification.