Vitamin B1 Plasma 90353

Test Code

VIT B1 P

Alias/See Also

VIT B1 P

CPT Codes
84425

Preferred Specimen

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

Patient Preparation
Overnight fasting is required

Minimum Volume

Other Acceptable Specimens

Frozen plasma foil wrapped (light-protected) • Frozen serum in an amber transport tube or foil wrapped (light-protected)

Instructions

Fasting specimen. Draw one Lavender protect from light plasma sent frozen

Transport Container

LAV

Transport Temperature

Specimen Stability

Room temperature: 8 hours
Refrigerated: 48 hours
Frozen: 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Hemolysis • Lipemia • Received room temperature • Received refrigerated • Received not protected from light

Methodology
Chromatography/Mass Spectrometry

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 purposes.

Setup Schedule

Set up: Tues-Sat; Report available: 3-5 days

Reference Range

Adult

8-30 nmol/L

Clinical Significance

Vitamin B1 deficiency is most often associated with alcoholism, chronic illness and following gastric by-pass surgery. Prolonged deficiency causes beriberi. Plasma vitamin B1 is useful in evaluating nutritional assessment and compliance, while whole blood vitamin B1 is useful in evaluating body stores.

Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

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.