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par·a·thy·roid hor·mone (PTH),

a peptide hormone formed by the parathyroid glands; it raises the serum calcium levels when administered parenterally by causing bone resorption, reducing renal clearance of calcium and increasing efficiency of calcium absorption in the intestine. It acts in conjunction with calcitonin and other hormones.
Synonym(s): parathormone, parathyrin

Parathyrin (per´əthī´rin), a brand name for parathyroid hormone.
References in periodicals archive ?
Highly sensitive two-site immunoradiometric assay of parathyrin and its clinical utility in evaluating patients with hypercalcemia.
Performance and diagnostic applications of a two-site immunoradiometric assay for parathyrin in serum.