Work out vitamin d status instantly with clear inputs, formula shown and shareable results.
Converts a 25-hydroxyvitamin D result between ng/mL and nmol/L and applies the Endocrine Society status categories.
Vitamin D status
nmol/L = ng/mL x 2.496. Deficiency under 20 ng/mL (50 nmol/L), insufficiency 20-29, sufficiency 30-100 ng/mL
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
No. The Institute of Medicine treats 20 ng/mL as sufficient, while the Endocrine Society prefers 30 ng/mL.
Total 25-hydroxyvitamin D; 1,25-dihydroxyvitamin D does not reflect stores.