The main excretory waste of humans is urine. After the glomerular filtrate is reabsorbed by the renal tubules, the yellow, strong-smelling and non-nitrogenous liquid that accumulates in the urinary bladder is called urine. A healthy person excretes an average of 1.5 liters of urine daily. If the daily urine output is > 2.5 liters it is called polyuria, < 400 ml is called oliguria and < 100 ml is called anuria. Hyperuricosuria is caused by excessive uric acid in the urine. Substances that increase urine volume are called diuretics (water, tea, coffee). Diseases like diabetes, nephritis etc affect the rate and volume of urine.