<prompt> In renal failure diuretic phase occur on -11st day3rd day28-35 day14-18 day  <response>: Oliguric anuric phase: Urine output decreases from renal tubule damage. 3. Diuretic phase: The kidneys try to heal and urine output increases, but tubule scarring and damage occur occurs in 14-20 days.. Recovery phase: Tubular edema resolves and renal function improves. Ref Harrison20th edition pg 288 