Vitamin B2, Riboflavin

Tube Type

Test ID   LAB1091
EPIC Order
   VITAMIN B2
CPT Code(s)   84252
Group/Individual Test   Individual
Laboratory   Core Referral Testing
Tube Station   30
Specimen Routine: 4mL blood/Green NA Heparin tube; protect from light; See Comments
  Micro: 0.75mL blood; protect from light; See Comments
Availability Routine: Reference Laboratory - Mayo Clinic Laboratories
Turnaround Time   5-7 days
Reference Range Normal: See separate report
Comments
  • Patient should be fasting 12-14 hours.  For infants, collect prior to feeding.
  • Collect a separate tube specifically for Vitamin B2 when collecting other vitamins
  • Sample must be processed within 2 hour of collection. Protect from light.

Reviewed by J. Carr on November 11, 2025

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514