Lab comparison
Phosphorus: 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 | 718 | 001024 | 0127-1 |
| Primary tube | Serum separator tube (SST) | Red-top tube, gel-barrier tube, or green-top (lithium heparin) tube | SST Tube |
| Specimen type | 1 mL serum | Serum (preferred) or plasma | 1 mL SST Tube |
| Patient prep | See lab specimen manual | See lab specimen manual | See lab specimen manual |
| 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 Phosphorus?
The Quest Diagnostics order code for Phosphorus is 718.
What tube color does LabCorp use for Phosphorus?
LabCorp uses a Red-top tube, gel-barrier tube, or green-top (lithium heparin) tube for Phosphorus.
Does Phosphorus require fasting?
Phosphorus 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.
Need the full lookup, not just a comparison?
No login · Zero PHI · Clinician-verified · Quest + LabCorp + BioReference.