title: Increased fractional excretion of sodium in prerenal azotemia: need for careful interpretation.
mesh_terms: D058186:Acute Kidney Injury / Q000652:urine*; D019411:Clinical Laboratory Techniques; D006801:Humans; D008104:Liver Cirrhosis, Alcoholic / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D012964:Sodium / Q000652:urine*; D014511:Uremia / Q000175:diagnosis*
chemical_list: D012964:Sodium