Nephrology · Internal Medicine

Sodium Chloride Deficit (Hyponatremia) calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Nacldef Weight Kg (kg)

Nacldef Measured Sodium Mmol L (mmol/L)

Nacldef Target Sodium Mmol L (mmol/L)

Result

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Formula inputs

Nacldef Weight Kg (kg)Accepted range: 30 to 200
Nacldef Measured Sodium Mmol L (mmol/L)Accepted range: 100 to 140
Nacldef Target Sodium Mmol L (mmol/L)Accepted range: 120 to 145

Primary source

Adrogué HJ, Madias NE. Hyponatremia. N Engl J Med. DOI: 10.1056/NEJM200005043421806. PMID: 10693886. Scope: Total body sodium deficit (mEq) ≈ 0.6 × weight (kg) × (target Na − measured Na) using estimated total body water. (2000)

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