Specific reference ranges for 25-hydroxyvitamin D3 and 25-hydroxyvitamin D2 are not available
Reference range information is available for the total 25-hydroxyvitamin D and is as follows:
<12 ng/mL indicates severe deficiency with risk of rickets or osteomalacia
10 - 29 ng/mL mild to moderate deficiency with increased risk of osteoporosis
30 - 50 ng/mL optimum levels
51 - 80 ng/mL has increased risk of hypercalciuria
> 80 ng/mL toxicity possible.
Only the total 25-hydroxyvitamin D level should be considered when assessing 25-hydroxyvitamin D status.