Lab comparisonCPT 83036
Hemoglobin A1C: Quest vs LabCorp vs BioReference, tube, code & requirements
Measures average blood glucose over past 2-3 months. 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 | 496 | 001453 | 0830360 |
| Primary tube | Lavender Top (EDTA) | Lavender Top (EDTA) | Lavender Top (EDTA) |
| Specimen type | Whole Blood | Whole Blood | Whole Blood |
| Patient prep | None | None | None |
Frequently asked questions
What is the Quest Diagnostics order code for Hemoglobin A1C?
The Quest Diagnostics order code for Hemoglobin A1C is 496.
What tube color does LabCorp use for Hemoglobin A1C?
LabCorp uses a Lavender Top (EDTA) for Hemoglobin A1C.
Does Hemoglobin A1C require fasting?
No fasting is required for Hemoglobin A1C.
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.