The purpose of this lab experiment was to use prepared dipsticks and perform chemical tests to determine the charcateristics of normal urine as well as to identify abnormal urinary components. . A process called Urinalysis , which is The urinary system consists of the paired kidneys , ureters , the single urinary bladder and urethra . To perform its fucntions , the kidney acts first as blood filter, and then as a filtrate processor. It allows toxins , metabolic watses , and excess ions to leave the body in the urine . while retaining needed substances and returning them to the blood . Malfunction of the urinary sytem , particularly of the kidneys , leads to a failure in homeostasis which , unless corected, is fatal.