Vitamin B6, Plasma

Test Code

94530

CPT Codes
84207<br>** Restricted Use ** This code is available to Client #55032 only

Preferred Specimen

1 mL frozen plasma collected in an EDTA (lavender-top) tube - protected from light

Patient Preparation
Overnight fasting is required

Minimum Volume

0.5 mL

Instructions

Protect from light. Separate cells within 6 hours by centrifugation at 2-8°C (2200-2500 rmp, 800-100g ) for 5-10 minutes. Transfer plasma to an amber polypropylene or polyethylene transport tubes to protect from light. Alternately, neutral color polypropylene or polyethlene tubes can be used if wrapped in aluminum foil. Freeze the tubes at -10 to -30°C. Ship frozen.

Transport Temperature

Frozen

Specimen Stability

Room temperature: 72 hours
Refrigerated: 5 days
Frozen: 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 FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purpose.

Setup Schedule

Set up: Sun-Fri; Report available: 1-4 days

Clinical Significance

Test is used to determine vitamin B6 deficiency or overdosage, for monitoring treatment, and to evaluate wellness and health.

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.