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Fractional Excretion of Urea (FEUrea)

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

mg/dL
mg/dL
mg/dL
mg/dL

Advice

Some experts recommend placing a foley catheter in all patients with acute renal failure to remove obstructive uropathy from the differential. This can be considered, especially in patients who are unable to provide information about their bladder and urination (or when ultrasound is unavailable).