Medicine Pre-Renal Azotemia is characterized by all of the following. Except : A Fractional Excretion of Na < 1% B Urinary osmolality > 500 mosm/kg C Urinary sodium concentration > 40 meq/1 D Reversible with replacement fluids 💡 Explanation Pre-Renal Azotemia is characterized by all of the following. Except : ✓ Correct Answer: C. Urinary sodium concentration > 40 meq/1