Fractional Excretion of Sodium (FENa)

FENa

  • Fractional Excretion of Sodium (FENa) = (UNa x PCr) / (PNa x UCr) x 100
    • http://www.medcalc.com/fena.html
  • Renal Failure Index (RFI) = (UNa x PCr) / UCr
  • Transtubular Potassium Gradient (TTKG) = (UK x Posm) / (PK x Uosm)

Interpretation of the Urinary Indices:

fena

 

 

 

 

 

 

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