Levetiracetam is drawn in a red-top tube (no gel) at Quest, a Red-top tube, lavender-top (EDTA) tube or green-top (sodium heparin or lithium heparin) tube at LabCorp, and a Red Top at BioReference.
Lab comparison
Levetiracetam: 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 | 15142 | 716936 | 3465-2 |
| Primary tube | red-top tube (no gel) | Red-top tube, lavender-top (EDTA) tube or green-top (sodium heparin or lithium heparin) tube | Red Top |
| Specimen type | 1 mL serum collected in a red-top tube (no gel) | Serum or plasma | Red Top |
| Patient prep | Collect at trough level (i.e. immediately prior to next dose). | Collect at trough level (i.e. immediately prior to next dose). | Collect at trough level (i.e. immediately prior to next dose). |
| Minimum volume | Stated with specimen 1 mL | Not stated | Not stated |
Frequently asked questions
What is the Quest Diagnostics order code for Levetiracetam?
The Quest Diagnostics order code for Levetiracetam is 15142.
What tube color does LabCorp use for Levetiracetam?
LabCorp uses a Red-top tube, lavender-top (EDTA) tube or green-top (sodium heparin or lithium heparin) tube for Levetiracetam.
Does Levetiracetam require fasting?
Levetiracetam patient prep: Collect at trough level (i.e. immediately prior to next dose).. 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, Sep 7, 2026
LabCorp verified by: Mandi Boss B Franklin, Sep 7, 2026
BioReference verified by: Mandi Boss B Franklin, Sep 7, 2026
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