Vitamin D Status Calculator
Interpret your vitamin D (25-hydroxyvitamin D) level and get personalized supplementation recommendations.
Lab Results
Risk Factors
Vitamin D Status
30.0 ng/mL
(75.0 nmol/L)
Sufficient
Interpretation
Vitamin D level is within the optimal range.
Supplementation Recommendations
Loading dose: Not needed
Maintenance: 600-1000 IU/day (maintenance)
Target level: 30-50 ng/mL
Time to target: Already at target
Monitoring
- • Annual monitoring if on supplementation
Reference Ranges
< 12 ng/mL: Severe deficiency
12-19 ng/mL: Deficiency
20-29 ng/mL: Insufficiency
30-100 ng/mL: Sufficient
> 100 ng/mL: Potential toxicity
Disclaimer: This calculator provides general guidance. Vitamin D requirements vary by individual. High-dose supplementation should be monitored by a healthcare provider. Some conditions require active vitamin D forms.