Medicine True about acute tubular necrosis: (PGI June 2007) A Urine specific gravity > 1020 B Urine osmolality > 300 mosmoles/kg C Urine Na < 10 meq/L D Blood urea: creatinine ratio < 20 💡 Explanation True about acute tubular necrosis: (PGI June 2007) ✓ Correct Answer: D. Blood urea: creatinine ratio < 20