Common Symptoms and Investigations of Urinary system Oliguria Normal urine volume in 24 hours in health and in temperate climates is in a range of 800-2500 ml. A volume less than 400 ml is called oliguria. Anuria : Urine volume < 100ml / 24 hours is called anuria Polyuria : Urine volume > 3 litres / 24 hours is […]