Epithelial cells cover the inside and outside of the surfaces of your body. They are found on your skin, blood vessels, and organs, including your urinary tract (which includes your kidneys, ureters, bladder, and urethra).

An epithelial cells in urine test is a part of a urinalysis, a test that measures different substances in your urine. It may be part of a routine checkup, or your health care provider may order the test if you have signs of a urinary tract problem.

Source: MedlinePlus, U.S. National Library of Medicine