What stimulates the renal hydroxylation step to produce vitamin D?
A)Erythropoietin
B)Thyroid hormone
C)Calcitonin
D)Parathyroid hormone

Name: What stimulates the renal hydroxylation step to produce vitamin D? A)Erythropoietin B)Thyroid hormone C)Calcitonin D)Parathyroid hormone
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Question

Quizplus · Accepted Answer

The first step occurs in the liver with hydroxylation at the 25th carbon (calcifediol), and the second hydroxylation occurs at the first carbon position in the kidneys and is stimulated by parathyroid hormone.

What Stimulates the Renal Hydroxylation Step to Produce Vitamin D