Biochemistry Active form of vitamin D in kidney is: A 1 dihydroxy cholecalciferol B 25 hydroxy cholecalciferol C 1, 25 dihydroxy cholecalciferol D 7 dihydroxy calciferol 💡 Explanation Active form of vitamin D in kidney is: ✓ Correct Answer: C. 1, 25 dihydroxy cholecalciferol