ASNRT — Arab Society of Nephrology and Renal Transplantation

Electrolyte-Free Water Clearance Calculator

EFWC: more accurate than osmolar free water clearance for dysnatremia

When to use it

Use to assess renal free water handling in hyponatremia or hypernatremia.

Category

Electrolytes & Acid-Base

References

  • Nguyen MK, Kurtz I. Clin Exp Nephrol. 2005;9(4):272-280
  • Berl T. J Am Soc Nephrol. 2008;19(6):1076-1078

About NephroMind

This calculator is part of NephroMind, a free clinical decision-aid platform from the Arab Society of Nephrology and Renal Transplantation (ASNRT) — over 129 bedside nephrology calculators plus a renal drug-dosing database, coded by a practicing transplant nephrologist.

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