Fractional Excretion of Urea (FEUrea)

Determines the cause of renal failure. Similar to the FENa, but can be used on patients on diuretics.

Fractional Excretion of Urea (FEUrea) Calculator

Enter the required laboratory values to calculate FEUrea:

Serum Urea (BUN):

Enter BUN in mg/dL or serum urea in mmol/L

mg/dL mmol/L

Serum Creatinine:

mg/dL µmol/L

Urine Urea:

mg/dL mmol/L

Urine Creatinine:

mg/dL µmol/L

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