Sodium Correction Calculator
Corrected sodium for hyperglycaemia.
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Results
- Corrected sodium (Katz)
- 136.3 mEq/L
- Corrected sodium (Hillier)
- 140.5 mEq/L
- Measured sodium
- 128 mEq/L
- Correction (Katz)
- 8.3 mEq/L
- Status after correction
- Normal range
Quick answer
High glucose dilutes serum sodium; corrected sodium adds 1.6–2.4 mEq/L per 100 mg/dL of glucose above 100.
Corrected Na = Na + 1.6 × (Glucose − 100)/100
How to use the Sodium Correction Calculator
- 1Enter measured serum sodium.
- 2Enter serum glucose in mg/dL.
- 3Compare Katz and Hillier corrections.
Frequently asked questions
Which factor should I use?
Katz 1.6 is traditional; Hillier 2.4 fits better at glucose above 400 mg/dL.
Why does glucose lower sodium?
It draws water into the vascular space, diluting sodium.