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Sodium Correction in Hyperglycemia

Calculate corrected sodium levels in hyperglycemic states

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Educational Use Only: This tool is for educational purposes only. It does not replace clinical judgment or medical advice.

Measured Serum Sodium(mEq/L)

mEq/L

Serum Glucose(mg/dL)

mg/dL

• High glucose draws water from cells, diluting sodium

• Measured sodium appears falsely low in hyperglycemia

• Formula: Corrected Na = Measured Na + 0.016 × (Glucose - 100)

• Normal sodium: 135-145 mEq/L

• Patient with DKA: Glucose 400 mg/dL, Na 132 mEq/L

• Correction: 132 + 0.016 × (400-100) = 136.8 mEq/L

• True sodium status is normal, not hyponatremic

Corrected sodium prevents misdiagnosis of hyponatremia in hyperglycemic patients and guides appropriate fluid and electrolyte management.

Essential in diabetic ketoacidosis (DKA) and hyperosmolar hyperglycemic state (HHS) to avoid inappropriate treatment of pseudohyponatremia.

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