Phosphorus-Phosphomolybd
ate-Urine, 24 hrs Urine

What is a Phosphorus Test? Phosphorus is a mineral that is combined with other substances to form organic and inorganic phosphate compounds. The terms are the same. They are often used interchangeably when talking about tests, but it is the amount of inorganic phosphate in the blood that is measured with serum Phosphorus or phosphate test.