Lab Tests for Vitamin D Deficiency
Vitamin D deficiency affects an estimated 42% of American adults and can cause fatigue, bone pain, muscle weakness, depression, and impaired immunity. Because symptoms develop gradually and overlap with many other conditions, a blood test is the only reliable way to know your vitamin D status. The 25-hydroxy vitamin D test is the standard measurement. With JustLabs, you can order this test online for $25 — no doctor visit or insurance required — and get results within 1-2 business days.
Recommended Tests
$64 + $18 order fee · $82 all-in
The 6 tests ordered separately: $69 (save $5)
Includes 2 of the 3 recommended tests below (not included: CMP), plus 4 more.
All 3 recommended tests
$44.50 + one $18 order fee = $62.50 all-in
Understanding Your Results
| Test | Normal Range | Low Means | High Means |
|---|---|---|---|
| Vitamin D, 25-OH | 30–100 ng/mL | <20 = deficiency; 20-29 = insufficient | >100 ng/mL = toxicity risk (rare) |
| Calcium (CMP) | 8.5–10.5 mg/dL | May drop with severe vitamin D deficiency | Can indicate excess vitamin D supplementation |
How to Order
Order Online
Select your tests and pay securely. A licensed physician authorizes your order.
Visit Quest Diagnostics
Walk into any of 2,200+ Quest locations nationwide. No appointment needed.
Get Results
Results available in your account within 1-2 business days.
Frequently Asked Questions
Related Conditions
Related Articles
How much a vitamin D test costs without insurance and where to find the best price.
Which vitamins and minerals to test and how to build a complete nutrient panel.
The essential blood tests to identify thyroid, iron, and vitamin causes of tiredness.
Content reviewed for accuracy by the JustLabs editorial team.