Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Changes in serum FGF23 after a single bolus of ergocalciferol (vitamin D2) 300,000 IU intramuscularly in 45 subjects with vitamin D deficiency/insufficiency. FGF23, which inhibits 1α-hydroxylase activity, is increased by 50% (P<0.01) 3 months after the bolus. Reproduced with permission from Turner et al.29
