Tuesday, January 18, 2011

FE Urea Calculator

Fractional Excretion of Urea =

((Urine Urea/Plasma Urea)*100
(Urine Creatinine/Plasma Creatinine))

FE Urea is used to determine the type of renal failure in patients using diuretics, since the FeNa calculation can be inaccurate. Fractional excretion of urine less than 35% is consistent with a pre-renal acute renal failure.

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