Translations:Vitamin D/72/en

Recommended serum levels

See also: Reference ranges for blood tests § Vitamins, and Hypervitaminosis D § Ethnic differences

Global vitamin D serum levels among adults (nmol/L).

  > 75

  50-74

  25-49

Recommendations on recommended 25(OH)D serum levels vary across authorities, and vary based on factors like age. US labs generally report 25(OH)D levels in ng/mL. Other countries often use nmol/L. One ng/mL is approximately equal to 2.5 nmol/L.