Complete Blood Count (CBC) Without Differential is drawn in a EDTA (lavender-top) tube at Quest, a Lavender-top (EDTA) tube at LabCorp, and a Lavender-top (EDTA) tube at BioReference.
Lab comparison
Complete Blood Count (CBC) Without Differential: 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.
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| Requirement | Quest Diagnostics | LabCorp | BioReference |
|---|---|---|---|
| Test code | 1759 | 028142 | 0034-9 |
| Primary tube | EDTA (lavender-top) tube | Lavender-top (EDTA) tube | Lavender-top (EDTA) tube |
| Specimen type | Whole blood from a full EDTA (lavender-top) tube | Whole blood | Lavender top- EDTA |
| Patient prep | See lab specimen manual | See lab specimen manual | See lab specimen manual |
| Minimum volume | Minimum Volume Microtainer 0.5 mL • 1 mL whole blood EDTA tube | Minimum Volume 0.5 mL (500 μL for pediatric microtainer capillary tubes; fill tube to capacity) | Not stated |
Frequently asked questions
What is the Quest Diagnostics order code for Complete Blood Count (CBC) Without Differential?
The Quest Diagnostics order code for Complete Blood Count (CBC) Without Differential is 1759.
What tube color does LabCorp use for Complete Blood Count (CBC) Without Differential?
LabCorp uses a Lavender-top (EDTA) tube for Complete Blood Count (CBC) Without Differential.
Does Complete Blood Count (CBC) Without Differential require fasting?
Complete Blood Count (CBC) Without Differential patient prep: See lab specimen manual. 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 4, 2026
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