The active form of vitamin D in the body is ____.

Question

Quizplus · Accepted Answer

Calcitriol is the active form of vitamin D in the body, which is produced in the kidney from its precursor, 25-hydroxyvitamin D. Calsequestrin is a calcium-binding protein in muscle cells, calcitonin is a hormone released by the thyroid gland to lower blood calcium levels, and calbindin is a calcium-binding protein in intestinal cells. However, none of these are involved in the synthesis or activity of vitamin D in the body.

The Active Form of Vitamin D in the Body Is