Lab comparisonCPT 85025
Complete Blood Count: Quest vs LabCorp vs BioReference, tube, code & requirements
Measures red blood cells, white blood cells, hemoglobin, hematocrit, and platelets. 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 | 6399 | 005009 | 0700025 |
| 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 Complete Blood Count?
The Quest Diagnostics order code for Complete Blood Count is 6399.
What tube color does LabCorp use for Complete Blood Count?
LabCorp uses a Lavender Top (EDTA) for Complete Blood Count.
Does Complete Blood Count require fasting?
No fasting is required for Complete Blood Count.
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.