Lab comparison
Glucose: 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.
| Requirement | Quest Diagnostics | LabCorp | BioReference |
|---|---|---|---|
| Test code | 483 | 001032 | 0095-0 |
| Primary tube | Serum separator tube (SST) | Red-top tube, gel-barrier tube, or green-top (lithium heparin) tube. Do not use oxalate, EDTA, or citrate plasma. | Grey top- Sodium Fluoride |
| Specimen type | 1 mL serum | Serum (preferred) or plasma | Grey top- Sodium Fluoride |
| Patient prep | Overnight fast of 8-14 hours; drink only water. | Overnight fast of 8-14 hours; drink only water. | Overnight fast of 8-14 hours; drink only water. |
| Turnaround time | Not stated | Not stated | Turnaround Time 1 DAY |
| Minimum volume | Minimum Volume 0.5 mL | Minimum Volume 0.7 mL (Note: This volume does not allow for repeat testing.) | Qty 1 |
Frequently asked questions
What is the Quest Diagnostics order code for Glucose?
The Quest Diagnostics order code for Glucose is 483.
What tube color does LabCorp use for Glucose?
LabCorp uses a Red-top tube, gel-barrier tube, or green-top (lithium heparin) tube. Do not use oxalate, EDTA, or citrate plasma. for Glucose.
Does Glucose require fasting?
Glucose patient prep: Overnight fast of 8-14 hours; drink only water.. 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.
Need the full lookup, not just a comparison?
No login · Zero PHI · Clinician-verified · Quest + LabCorp + BioReference.