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Vitamin B2 (Riboflavin), PlasmaTest Code
This test is not available for New York patient testing.
2 mL plasma collected in an EDTA (lavender-top) tube
Separate plasma and transfer to a plastic shipping vial to prevent breakage. Wrap tube in aluminum foil to protect from light. Freeze immediately.
Note: Samples received frozen but not protected from light are acceptable. Wrap sample in foil before sending to lab, no disclaimer is required. Samples received refrigerated but not protected from light are unacceptable and should be rejected.
Foil wrapped plastic screw-cap vial
Room temperature: 4 hours
Refrigerated: 24 hours
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received room temperature • Received refrigerated • Received refrigerated and not protected from light
Fluorometric Detection • High Performance Liquid Chromatography (HPLC)
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.
Quest Diagnostics Nichols Institute