What is the Full form of PTH?

PTH stands for “Parathyroid Hormone”

Parathyroid hormone (PTH), also called parathormone or parathyrin, is a hormone secreted by the parathyroid glands that regulate the serum calcium concentration through its effects on bone, kidney, and intestine.

PTH influences bone remodeling, which is an ongoing process in which bone tissue is alternately resorbed and rebuilt over time. PTH is secreted in response to low blood serum calcium (Ca2+) levels.

PTH indirectly stimulates osteoclast activity within the bone matrix (osteon), in an effort to release more ionic calcium (Ca2+) into the blood to elevate a low serum calcium level.

PTH is secreted primarily by the chief cells of the parathyroid glands. It is a polypeptide containing 84 amino acids, which is a prohormone. It has a molecular mass of around 9500 Da. Its action is opposed by the hormone calcitonin.