What is a phosphate in urine test?A phosphate in urine test measures the amount of phosphate in your urine. Phosphate is an electrically charged particle that contains the mineral phosphorus. Phosphorus works together with the mineral calcium to build strong bones and teeth. It also plays an essential role in nerve function and how the body uses energy.Your kidneys control the amount of phosphate in your body. If you have a problem with your kidneys, it can affect your phosphate levels. Phosphate levels that are too low or too high can be a sign of a serious health problem.Other names: phosphorus test, P, PO4
