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Test Name:
Vitamin B12 Binding Capacity
- SBMF No:
44021 - Performance Lab Name:
ARUP Laboratories - Test Mnemonic:
VIT B12B - ABN:
Not required - CPT Code:
82608 - LOINC Code:
2171-7 - Ref Lab Test No:
0070260 - Also Known As:
B12B - Spec Type:
Serum - Spec Container:
Gold top (SST) or Red top (serum) tube - Pref Vol:
1.0 mL - Min Vol:
0.1 mL - Fasting:
No - Spec Collect:
Routine venipuncture
Protect from light - Spec Process:
Clot 30 minutes
Promptly centrifuge 15 minutes
Immediately transfer serum to light-protected (amber) plastic tube - Spec Store Transport:
Refrigerated
Protect from light - Spec Stability:
After separation from cells:
6 hours room temperature (20-30°C)
1 week refrigerated (2-8°C)
1 month frozen (-20°C) – Do not use frost-free units that undergo repeated freeze/thaw cycles - Spec Remarks:
Protect from light during collection, storage, and shipment - Methodology:
Quantitative Radioimmunoassay (RIA) - Clinical Significance:
Refer to:
- Reference Range:
800-2600 pg/mL
Interpretive Data:
This assay measures the unsaturated binding capacity of serum for vitamin B12. - Day Run:
Mon, Thu - Time Reported:
2-6 days - Test Type:
CHEMISTRY
