Medicine Acute Renal Failure d8f4df01 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 High-Yield Explanation Ans. is 'a' Urinary Na+ < 10 mmol/litre Explained earlier