TOPIC DISCUSSION: FENA less than one causes!

“Crrap 'n' cheap” 

•Cardio-renal syndrome

• Renal Artery Stenosis

• Renal allograft rejection

• Acute interstitial nephritis

• Pre renal

• Non-oliguric ATN

•

• Contrast nephropathy

• Hepato-renal syndrome

• Early obstructive disease

• Acute Glomerulonephritis

• Pigment nephropathy 

Although the test was designed originally in Oliguric patients. So how much use we have of it. Who knows! but above list is usually where we see FeNa<1