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METABOLISM OF CALCIUM (WK 8)

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Question:

Elevated PTH levels are high in hyperparathyroidism. Liver converts cholecalciferol to 25- Hydroxycholecalciferol, then kidney converts that to calcitriol (active Vitamin D3) to cause increase in plasma calcium concentration. In the absence of active vitamin D3, no matter how high the PTH levels are, calcium levels in plasma cannot increase.

Author: Shaun Arwinth



Answer:

Why does secondary hyperparathyroidism occur in liver and chronic kidney failure?


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