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HelpTest Code VITB2 Riboflavin (Vitamin B2), Plasma
Secondary ID
42363Method Name
Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)
Portions of this test are covered by patents held by Quest Diagnostics
Specimen Type
Plasma HeparinShipping Instructions
Ship specimen in amber vial to protect from light.
Specimen Required
Patient Preparation:
Fasting: 12 hours, required; Infants should have specimen collected before next feeding
Supplies: Amber Frosted Tube, 5 mL (T915)
Collection Container/Tube:
Preferred: Green top (sodium or lithium heparin)
Acceptable: Light-green top (sodium or lithium heparin plasma gel)
Submission Container/Tube: Amber vial
Specimen Volume: 2 mL plasma
Collection Instructions: Within 2 hours of collection, centrifuge and aliquot plasma into an amber vial.
Offsite collection instructions:
Overnight fast (12 to 14 hours)
Place sample on ice right after the draw, protect from light
Spin sodium heparin top
Aliquot plasma in amber tube
Place in the freezer ASAP until courier pick up
Send frozen sample on dry ice to the Main Lab (Laboratory Service Center)
Specimen Minimum Volume
Plasma: 0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Plasma Heparin | Refrigerated (preferred) | 28 days | LIGHT PROTECTED |
| Frozen | 28 days | LIGHT PROTECTED | |
| Ambient | 72 hours | LIGHT PROTECTED |
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | Reject |
| Gross icterus | OK |
Reference Values
1-19 mcg/L
Day(s) Performed
Monday, Wednesday, Friday
Report Available
2 to 5 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
84252