calcidiol

(noun)

A prehormone that is produced in the liver by the hydroxylation of vitamin D3 (cholecalciferol) by the enzyme cholecalciferol 25-hydroxylase.

Related Terms

Examples of calcidiol in the following topics:

  • Bone and Calcium Homeostasis

    • Vitamin D is converted to calcidiol in the liver.
    • Part of the calcidiol is converted by the kidneys to calcitriol, the biologically active form of vitamin D.