What is the primary function of calcitriol?

Calcitriol, also known as active Vitamin D, plays a crucial role in the regulation of calcium and phosphorus levels in the body. Its primary function is to enhance the absorption of these minerals from the gastrointestinal tract, facilitate the reabsorption of calcium in the kidneys, and stimulate bone resorption, which releases calcium into the bloodstream. By maintaining adequate levels of calcium and phosphorus, calcitriol ensures proper bone mineralization and plays a significant role in maintaining normal physiological functioning of the skeletal and muscular systems.

This function is particularly important for individuals undergoing hemodialysis, as they often face disruptions in mineral balance due to kidney impairment. By ensuring adequate calcium and phosphorus levels, calcitriol helps in preventing complications such as bone disease, which is common in patients with renal failure.