RenalNephrology

Corrected Serum Sodium in Hyperglycaemia (Katz Formula)

Corrects measured serum sodium for the dilutional effect of hyperglycaemia to reveal true osmolar status.

Measured serum sodium

mmol/L

Plasma glucose

mmol/L

Reference: Katz MA. N Engl J Med 1973

Medical Disclaimer: This calculator is a clinical decision support tool for qualified healthcare professionals. It does not replace clinical judgement. Always interpret results in the full clinical context. Reference: Katz MA. N Engl J Med 1973.

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