Medicine Pre-renal azotemia is associated with one of the following characteristic feature: A Urinary Na+ < 10 mmol/L B Renal failure index > 1 C Osmolality < 500 D Urinary creatinine / P. creatinine ratio < 20 💡 Explanation Pre-renal azotemia is associated with one of the following characteristic feature: ✓ Correct Answer: A. Urinary Na+ < 10 mmol/L