This Total 25-OHD assay measures the sum of 25-hydroxy vitamin D metabolites
(D2 and D3)
All ages: 20-50 ng/mL*
There is no known benefit of values > 50 ng/mL
Values > 80 ng/mL may be associated with toxicity
*In patients with risk factors such as bone disease, values between 20-29
ng/mL may be insufficient, and values greater than 30 ng/mL may be more
appropriate.
