What is calcitonin? Calcitonin is a hormone that is produced in humans by the parafollicular cells (commonly known as C-cells) of the thyroid gland' data-content='1456' >thyroid gland. Calcitonin is involved in helping to regulate levels of calcium and phosphate in the blood, opposing the action of parathyroid hormone.

Where is calcitonin function?

Calcitonin is a hormone that the C-cells in the thyroid gland produce and release. It opposes the action of the parathyroid hormone, helping to regulate the blood's calcium and phosphate levels.

What does a calcitonin do?

Calcitonin is a hormone made by your thyroid, a small, butterfly-shaped gland located near the throat. Calcitonin helps control how the body uses calcium. Calcitonin is a type of tumor marker. Tumor markers are substances made by cancer cells or by normal cells in response to cancer in the body.