25-hydroxycholecalciferol

25-hydroxycholecalciferol

 [hi-drok″sĭ-ko″le-kal-sif´er-ol] a metabolically activated form of cholecalciferol (vitamin D3) synthesized in the liver.

cal·ci·di·ol

(kal-sĭ-dī'ol), First step in the biologic conversion of vitamin D3 to the more active form, calcitriol; it is more potent than vitamin D3. Synonym(s): 25-hydroxycholecalciferol, calcifediol