Renal Failure Index (RFI) Calculator for Acute Tubular Necrosis

This Renal Failure Index (RFI) calculator determines the prerenal or renal cause of acute renal failure and helps monitor creatinine levels in patients with acute tubular necrosis. The RFI ranges from 0 to infinity, with RFI >1 indicating renal causes and RFI ≤1 indicating prerenal causes.

Measurement	Value	Standard Range
Urine Sodium (mEq/L):		20-40 mEq/L
Serum Creatinine (mg/dL):		0.6-1.2 mg/dL
Urine Creatinine (mg/dL):		20-250 mg/dL