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Vitamin B12 (Cobalamin)

Test Code
B12


Preferred Specimen
1 mL serum


Minimum Volume
0.5 mL


Other Acceptable Specimens


Heparinized plasma




Transport Container
Serum separator tube (SST)


Transport Temperature
 Refrigerated (cold packs)


Specimen Stability
 Ambient: 2 hours
Refrigerated: 2 days


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Hemolysis



Methodology
Immunoassay (IA)

Setup Schedule
24/7


Report Available
Same day


Reference Range
174-894 pg/mL


Clinical Significance
B12 is decreased in pernicious anemia, total or partial gastrectomy, malabsorption and certain congenital and biochemical disorders.




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.