Vitamin B6, Plasma
Test Summary
Test is used to determine vitamin B6 deficiency or overdosage, for monitoring treatment, and to evaluate wellness and health.
Aliases
- Pyridoxine
Specimen Collection
Special Instructions
N/A
Preferred Specimen
1 mL plasma collected in an EDTA (lavender-top) tube - protected from light. Specimen cannot be used for multiple tests. If other vitamin tests are ordered, draw tubes for each vitamin requested.
Minimum Volume
0.5 mL
Instructions
See Vitamin Collection Link
Patient Preparation
Overnight fasting is required.
Storage
Amber transport tube or foil wrapped transport tube
Transport Temperature
Frozen
Specimen Stability
- Room temperature: 72 hours
- Refrigerated: 5 days
- Frozen -20°C: 14 days
- Frozen -70°C: 42 days
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
Not light protected; Received room temperature; Received refrigerated; Hemolysis; Lipemia
Order Code
VITB6
EPIC (Premier) Code
LAB778
Includes
N/A
CPT Code
- 84207
Billing Code
- 670881
CPT Statement
Methodology
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. The FDA has determined that such clearance or approval is not necessary. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Physician Attestation of Informed Consent
N/A
Testing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly VA, 20153
14225 Newbrook Drive
Chantilly VA, 20153
Department
Reference Testing
Reference Range
| 0-1 year | Not established |
| 2-17 years | 3.0-35.0 ng/mL |
| ≥18 years | 2.1-21.7 ng/mL |
Setup Schedule / Expected Turnaround Time
Tuesday - Saturday; Report available: 2 - 4 days
Resources
Specimen Collection
Special Instructions
N/A
Preferred Specimen
1 mL plasma collected in an EDTA (lavender-top) tube - protected from light. Specimen cannot be used for multiple tests. If other vitamin tests are ordered, draw tubes for each vitamin requested.
Minimum Volume
0.5 mL
Instructions
See Vitamin Collection Link
Patient Preparation
Overnight fasting is required.
Storage
Amber transport tube or foil wrapped transport tube
Transport Temperature
Frozen
Specimen Stability
- Room temperature: 72 hours
- Refrigerated: 5 days
- Frozen -20°C: 14 days
- Frozen -70°C: 42 days
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
Not light protected; Received room temperature; Received refrigerated; Hemolysis; Lipemia
Result Information
Methodology
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
Testing Laboratory
N/A
Reference Range
| 0-1 year | Not established |
| 2-17 years | 3.0-35.0 ng/mL |
| ≥18 years | 2.1-21.7 ng/mL |
Setup Schedule / Expected Turnaround Time
Tuesday - Saturday; Report available: 2 - 4 days