Vitamin D, 25-OH, Total Blood Test

Compare labs

Feature	Labcorp	Quest Diagnostics
Price	$39.49	$24.49
Results in	~2 business days	~5 business days
Sample type	Blood Serum	Blood Serum
Require fasting	No	No

About the test

This test measures 25-hydroxy Vitamin D, the best indicator of vitamin D status. It can be used to monitor the effectiveness of supplementation and to assess patients with low calcium levels or symptoms of vitamin D deficiency.

Included biomarkers & Reference ranges

Biomarker	Reference range
Vitamin D, 25-OH, Total The combined measure of both major forms of vitamin D (D2 and D3) in your blood — the standard test used to assess overall vitamin D status.	30–100 ng/mL

Reference ranges vary by lab, age, and sex (M/F). Your report shows your exact range. Click any biomarker to see its optimal range and what your results mean.

Preparation

Labcorp lists no special preparation for this test.

Fasting for 8 hours before your blood draw is recommended but not required.
Fasting before a blood draw means you don't eat or drink anything except water.
Your doctor should provide any special instructions related to fasting for your test. Always follow your doctor's instructions.

How it works

1. Order online No referral or insurance
2. Get a requisition By email, instantly
3. Visit a draw center Bring a matching photo ID
4. Get results Securely by email

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Consultations

Not sure how to read your results? We can help.

Schedule a consultation with a Hormunity specialist. We’ll walk through every marker, interpret what it means for you, and map out the next steps for your care.

Book a specialist