A urinalysis test checks a sample of your urine (pee). It can find a small amount of blood cells in your urine and other types of cells, chemicals, and substances.

A urinalysis, which includes a test for blood in urine, is used to check your general health, including the health of your urinary tract, kidneys, and liver. The test can also be used to check for other health problems besides blood in urine.

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