25 - Hydroxycholecalciferol

25-hydroxycholecalciferol is the predominant form of vitamin D 3 in the blood. It is formed in the liver by hydroxylation (an enzyme of the endoplasmic reticulum vitamin D 3 -25-hydroxylase). It is absorbed from the blood by the kidneys (and partly by the bone marrow and placenta) and further hydroxylated to calcitriol.

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related articles

• Vitamin D
• 1,25-dihydrocholecalciferol
• Phosphate
• Calcium

References

MURRAY, Robert K.. Harperova biochemie. 2. edition. H&H, 1998. ISBN 80-7319-013-3.