Vitamins
What is Vitamin D? Optimal Ranges & Function
Normal Range:30-100 ng/mL
Optimal Range:50-80 ng/mL
What is Vitamin D?
Vitamin D is a fat-soluble vitamin that your skin produces when exposed to sunlight. It acts more like a hormone and affects nearly every cell in your body.
Why Vitamin D Matters
Vitamin D is critical for bone health, immune function, mood regulation, and reducing inflammation. Deficiency is extremely common, especially in northern latitudes.
Symptoms of Low Vitamin D
- Fatigue
- Bone pain
- Muscle weakness
- Depression
- Frequent illness
- Slow wound healing
Symptoms of High Vitamin D
- Nausea
- Vomiting
- Weakness
- Frequent urination
- Kidney problems
Reference Ranges
30 ng/mL100 ng/mL
50
80
Standard Lab Range
BioStack Optimal
| Range Type | Minimum | Maximum | Unit |
|---|---|---|---|
| Normal Range | 30 | 100 | ng/mL |
| Optimal Range | 50 | 80 | ng/mL |
Related Biomarkers
When to Request Additional Tests
If Your Vitamin D is Low
When Vitamin D is below optimal, these additional tests can help identify the underlying cause:
- calcium — Check related mineral status