Renal Kidney Failure Index Calculator

Urine Sodium:
Serum Creatinine:
Urine Creatinine:
Renal Failure Index:

Kidney failure also called Renal failure is kidneys fail to adequately filter waste products from the blood.

Renal Kidney Failure Index Formula:

RFI = UNa x SCr/UCr

Where UCr is Urine Creatinine in mg/dL, SCr is Serum Creatinine in mg/dL, UNa is Urine Sodium in mEq/L, RFI is Renal Failure Index.

Diagram showing the basic physiologic mechanisms of the kidney provides you helpful and handy calculator resources.