Vitamin B12 Binding Capacity, Unsaturated [928]

Test Code
B12 BIND USAT (S51303)

Quest Code

CPT Codes

Preferred Specimen
1 mL serum

Minimum Volume
0.2 mL

Transport Container
Plastic screw-cap vial

Specimen Stability
Room temperature: 4 days
Refrigerated: 4 days
Frozen: 30 days

Radiobinding Assay

Setup Schedule
Tue, Thu

Report Available
2 to 3 days

Reference Range
Adults 650-1340 pg/mL

Clinical Significance
Vitamin B12 Binding Capacity, Unsaturated (Transcobalamin), binds and transports vitamin B12 in the circulation. Increased concentrations are associated with patients with myeloproliferative disorders. Decreased concentrations are seen in individuals with megaloblastic anemia or Transcobalamin deficiency.

Performing Laboratory
Quest Diagnostics Nichols Institute Chantilly
14225 Newbrook Drive
Chantilly, VA 20153-0841

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.