<prompt> Hepatorenal syndrome feature are -Urine sodium 10 mEqLNormal renal histologyRenal function abnormal even after liver become normalProteinuria 500 mgday  <response>: Urine sodium hepatorenal syndrome Patients with low urine sodium excretion 10mEqL are at a greater risk of HRS. Urine sodium and creatinine levels are also used to calculate the fractional excretion of sodium, which is helpful in differentiating HRS and prerenal azotemia from intrinsic renal disease Ref Harrison20th edition pg 245 