Kaplan AA, Kohn OF. Fractional excretion of urea as a guide to renal dysfunction. Am J Nephrol. 1992;12(1-2):49-54.

Carvounis CP, Nisar S, Guro-Razuman S. Significance of the fractional excretion of urea in the differential diagnosis of acute renal failure. Kidney Int 2002;62(6):2223-2229.

Darmon M, Vincent F, Dellamonica J, et al. Diagnostic performance of fractional excretion of urea in the evaluation of critically ill patients with acute kidney injury: a multicenter cohort study. Critical Care 2011;15(4):R178.

Dr. Andre A. Kaplan

Dr. Orly F. Kohn

Fractional Excretion of Urea (FEUrea)

creatinine

urine_urea

urine_creatinine

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

<p>Similar to FENa; for pts on diuretics.</p>

FEUrea

The Fractional Excretion of Urea (FEUrea) determines the cause of renal failure. Similar to the FENa, but can be used on patients on diuretics.

Creatinine

Urine Urea

Urine Creatinine

FENa

Creatinine Clearance

MDRD GFR Equation

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Calc Function