| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Vitamin B6, Plasma
Test CodeVB6
CPT Codes
84207
Preferred Specimen
1 mL plasma collected in an EDTA (lavender-top) tube - protected from light
Patient Preparation
Overnight fasting is required
Minimum Volume
0.5 mL
Instructions
Separate cells within 6 hours by centrifugation at 2-8° C (2200-2500 RPM, 800-1000 g) for 5-10 minutes. Transfer plasma to an amber polypropylene or polyethylene transport tube to protect from light. Alternately, neutral color polypropylene or polyethylene tubes can be used if wrapped in aluminum foil. Freeze the tubes at -10° to -30° C. Ship frozen.
Transport Container
Amber transport tube or foil wrapped transport tube - light protected
Transport Temperature
Frozen
Specimen Stability
Room temperature: 72 hours
Refrigerated: 5 days
Frozen -20°C: 14 days
Frozen -70°C: 42 days
Refrigerated: 5 days
Frozen -20°C: 14 days
Frozen -70°C: 42 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis • Lipemia • Received room temperature • Received refrigerated • Not light protected
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 FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Set up: Mon-Sat; Report available: 2-4 days
Reference Range
| 0-1 year | Not established |
| 2-17 years | 3.0-35.0 ng/mL |
| ≥18 years | 2.1-21.7 ng/mL |
Clinical Significance
Test is used to determine vitamin B6 deficiency or overdosage, for monitoring treatment, and to evaluate wellness and health.
Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153
