Active form of vitamin D in kidney is_____________?
Correct answer: D. 1,25 dihydroxy cholecalciferol
- A. 1 dihydroxy cholecalciferol
- B. 25 hydroxy cholecalciferol
- C. 7 dihydroxy calciferol
- D. 1,25 dihydroxy cholecalciferol
Explanation
The kidney converts 25-hydroxycholecalciferol into 1,25-dihydroxycholecalciferol, the active hormonal form of vitamin D. The 25-hydroxy form is the principal circulating storage form, not the active renal product.
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