Vitamin D, 25-Hydroxy is drawn in a Serum tube at Quest, a Red-top tube or gel-barrier tube at LabCorp, and a SST Tube at BioReference.
Lab comparison
Vitamin D, 25-Hydroxy: Quest vs LabCorp vs BioReference, tube, code & requirements
. This page shows collection requirements for all three major reference labs in one view, so you don’t have to cross-check three portals.
Always verify against your lab’s current collection manual before drawing.
Every value on this page is verified by a nurse practitioner in active clinical practice, not scraped from an automated source.
View one lab
| Requirement | Quest Diagnostics | LabCorp | BioReference |
|---|---|---|---|
| Test code | 17306 | 081950 | 0286-5 |
| Primary tube | Serum tube | Red-top tube or gel-barrier tube | SST Tube |
| Specimen type | 0.8 mL serum | Serum | 1 mL SST Tube |
| Patient prep | Fasting preferred, but not required | Fasting preferred, but not required | Fasting preferred, but not required |
| Minimum volume | Minimum Volume 0.5 mL | Minimum Volume 0.3 mL (Note: This volume does not allow for repeat testing.) | Qty 1 |
Frequently asked questions
What is the Quest Diagnostics order code for Vitamin D, 25-Hydroxy?
The Quest Diagnostics order code for Vitamin D, 25-Hydroxy is 17306.
What tube color does LabCorp use for Vitamin D, 25-Hydroxy?
LabCorp uses a Red-top tube or gel-barrier tube for Vitamin D, 25-Hydroxy.
Does Vitamin D, 25-Hydroxy require fasting?
Vitamin D, 25-Hydroxy patient prep: Fasting preferred, but not required. Always confirm with the ordering lab before the draw.
Data provenance
Source: Quest Diagnostics specimen collection manual, LabCorp directory of services, and BioReference laboratory collection guide.
Verified by: a licensed nurse practitioner in active clinical practice. Values are reviewed against each lab’s published collection requirements. Always confirm against your lab’s current manual before drawing.
Quest verified by: Mandi Boss B Franklin, Jul 4, 2026
LabCorp verified by: Mandi Boss B Franklin, Jul 4, 2026
BioReference verified by: Mandi Boss B Franklin, Jul 8, 2026
Need the full lookup, not just a comparison?
No login · Zero PHI · Clinician-verified · Quest + LabCorp + BioReference.
More test comparisons
Related: why lab specimens get rejected, and how to prevent it
← All comparison guides