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Vitamin B6, PlasmaTest Code
1 mL plasma collected in an EDTA (lavender-top) tube - protected from light
Separate cells within 6 hours by centrifugation at 2-8° C (2200-2500 rpm, 800-1000g) 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.
Amber transport tube, light-protected
Room temperature: 6 hours
Refrigerated: 12 hours
Frozen -20°C: 6 days
Frozen -70°C: 42 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received room temperature • Received refrigerated • Hemolysis • Lipemia
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
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.
|2-17 Years||3.0-35.0 ng/mL|
Test is used to determine vitamin B6 deficiency or overdosage, for monitoring treatment, and to evaluate wellness and health.
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153