AllRefer Health - Fractional Excretion of Sodium (FE Sodium, FENa) Information

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Fractional Excretion of Sodium

Alternate Names : FE Sodium, FENa

Definition

Fractional excretion of sodium is not a test, but rather a calculation based on the concentrations of Sodium (Na) and Creatinine (Cr) in the blood and the urine. Urine chemistry (based on urinalysis) and serum chemistry tests are necessary to perform this calculation.

The information from this calculation is helpful in defining the extent of sodium conservation by the kidney, and it may also help identify certain diseases of the kidney.

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