Lab comparisonCPT 82607
Vitamin B12: Quest vs LabCorp vs BioReference, tube, code & requirements
Measures vitamin B12 levels. 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.
| Requirement | Quest Diagnostics | LabCorp | BioReference |
|---|---|---|---|
| Test code | 921 | 001503 | 0826070 |
| Primary tube | Red Top or Gold SST | Gold SST | Red Top |
| Specimen type | Serum | Serum | Serum |
| Patient prep | None | None | None |
Frequently asked questions
What is the Quest Diagnostics order code for Vitamin B12?
The Quest Diagnostics order code for Vitamin B12 is 921.
What tube color does LabCorp use for Vitamin B12?
LabCorp uses a Gold SST for Vitamin B12.
Does Vitamin B12 require fasting?
No fasting is required for Vitamin B12.
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.
Need the full lookup, not just a comparison?
No login · Zero PHI · Clinician-verified · Quest + LabCorp + BioReference.