PTH, Intact and Calcium Ionized

The PTH, Intact and Calcium Ionized panel contains 2 tests with 2 biomarkers.

The hormone Parathyroid Hormone (PTH) acts to increase serum calcium and 1-, 25- dihydroxyvitamin D concentrations, while decreasing phosphorus. Cross-reactivity with fragment 7-84 may occur in patients with renal insufficiency. The BioIntact PTH assay is considered the most reliable. Parathyroid function is related to the calcium concentration so both results should be interpreted together.

The following is a list of what is included in the item above. Click the test(s) below to view what biomarkers are measured along with an explanation of what the biomarker is measuring.

Also known as: Calcium Ionized

Calcium, Ionized

You have more calcium in your body than any other mineral. Calcium has many important jobs. The body stores more than 99 percent of its calcium in the bones and teeth to help make and keep them strong. The rest is throughout the body in blood, muscle and the fluid between cells. Your body needs calcium to help muscles and blood vessels contract and expand, to secrete hormones and enzymes and to send messages through the nervous system.

Also known as: "Biointact" PTH, Intact PTH, Parathyroid Hormone , Parathyroid Hormone (PTH), PTH, PTH Intact without Calcium


PTH stands for parathyroid hormone. It is a protein hormone released by the parathyroid gland. Parathyroid hormone controls calcium, phosphorus, and vitamin D levels in the blood and bone. Release of PTH is controlled by the level of calcium in the blood. Low blood calcium levels cause increased PTH to be released, while high blood calcium levels block PTH release.