Medicine Which of the following values are suggestive of acute tubular necrosis : A Urine osmolality>500 B Urine sodium>40 C Blood urea nitrogen/plasma creatinine>20 D Urine creatinine /plasma creatinine>40 💡 Explanation Which of the following values are suggestive of acute tubular necrosis : ✓ Correct Answer: B. Urine sodium>40