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FENa Calculator

FENa Calculator to calculate the fractional excretion of sodium (FENa). FENa measures the percentage of neutrophils in your white blood count. The FENa formula is shown below on how to calculate fractional excretion of sodium.

Fractional Excretion of Sodium Calculator

Urine Sodium:
Urine Creatinine:
Plasma Sodium:
Plasma Creatinine:

How to Calculate FENa

Below is the fractional excretion of sodium formula on how to calculate FENa.

FENa formula = FENa = (UNa X PCr) / (UCr X PNa) X 100, where
UNa = Urine Sodium,
UCr = Urine Creatinine,
PNa = Plasma Sodium,
PCr = Plasma Creatinine

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