B12 (Vitamin B12)

Tube Type

Test ID   LAB67
EPIC Order
   VITAMIN B12
CPT Code(s)   82607
Group/Individual Test   Individual
Laboratory   Core Laboratory
Tube Station   30
Specimen Routine: 4 mL blood/gold SST tube/orange SST, or red plain tube also acceptable
  micro: 500 uL ml blood/gold or red top bullet
Stability

Unspun:

Spun/Separated:
8 hours
Room temperature: 8 hours
Refrigerator: 48 hours
Frozen: 4 weeks
Availability Routine: 24 hours/day
Turnaround Time   4 hours
Reference Range Normal: 211-911 pg/mL
Comments Hemolyzed specimens rejected. 

Reviewed by J. Carr on January 12, 2026

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