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Retired NBME 15 Answers

nbme15/Block 2/Question#4 (reveal difficulty score)
A 45-year-old man with chronic renal failure ...
25-hydroxycholecalciferol ๐Ÿ” / ๐Ÿ“บ / ๐ŸŒณ / ๐Ÿ“–
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submitted by โˆ—cassdawg(1781)
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The kidney converts 25-hydroxycholecalciferol into 1,25-hydroxycholecalciferol (FA2020 p70).

Here is an image with the steps of active vitamin D synthesis.

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