Vitamin B12 Binding Capacity




Test Mnemonic

B12BIN

CPT Codes

  • 82608 - QTY (1)

LOINC ®

2171-7

Performing Laboratory

ARUP


Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
1 mLSerumSST (Gold) Refrigerated 

Alternate Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
1 mLSerumNo additive (Red) Refrigerated 

Minimum Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
0.1 mL     

Stability

Environmental Condition Description
AmbientAfter separation from cells: 6 hours
RefrigeratedAfter separation from cells: 1 week
FrozenAfter separation from cells: 1 month

Days Performed

Mon, Thu

Turnaround Time

2 - 6 days

Methodology

Name Description
Radioimmunoassay (RIA) 

Reference Range

Vitamin B12 Binding Capacity
Sex Age From Age To Type Range Range Unit
       Normal800 - 2600pg/mL

Special Info

Patient should fast for 12 - 15 hours prior to collection. Vitamin B12 supplements should not be administered within 72 hours of blood draw.

Clinical Info

Measures unsaturated binding capacity of serum for Vitamin B12.