Vitamin B2 (Riboflavin), Plasma

Test Code
VITB2 (36399)

Quest Code
36399

CPT Codes
84252

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

Patient Preparation
Overnight fasting is required. Avoidance of vitamin supplements for 24 hours prior to collection is preferred.

Minimum Volume
0.5 mL

Instructions
Pour plasma into amber transport tube (preferred) or transport tube wrapped in aluminum foil to protect from light.

Transport Temperature
Frozen

Specimen Stability
Room temperature: 4 hours
Refrigerated: 24 hours
Frozen: 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received room temperature • Received refrigerated

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 purposes.

Setup Schedule
Tue-Sat

Report Available
3 to 4 Day(s)

Reference Range
6.2-39.0 nmol/L

Clinical Significance
Vitamin B2 is involved in metabolism of fats, carbohydrates, and protein. The clinical manifestations of deficiency are non-specific. Clinical manifestations include mucocutaneous lesions of the mouth and skin, corneal vascularization, anemia, and personality changes.

Performing Laboratory
Quest Diagnostics Nichols Institute
27027 Tourney Road
Valencia, CA 91355-5386



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.