Vitamin B1


Tube Type

Test ID   LAB745
EPIC Order
CPT Code(s)   84425
Group/Individual Test   Individual
Laboratory   Core Referral Testing
Tube Station   30
Specimen Routine:
4 mL blood/lavender top tube. Protected from light.
see important Comments 
  Micro: 1.5 mL blood. Protected from light.
Availability Routine: Reference Laboratory - Mayo Clinic Laboratories
Turnaround Time   4-7 days
Reference Range Normal: see separate report
  • Fasting (12-14 hours), infants-prior to next feeding) recommended sample.
  • Draw a separate tube when collecting with other vitamins.
  • Sample must be processed immediately after collection.

Reviewed by jcayless on December 19, 2019

Note: Reference ranges provided on this web site are for guidance only, and may not reflect the most recent changes. Refer to laboratory reports for current reference data.

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