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Vitamin B12

Test Code
B12


CPT Codes
82607

Preferred Specimen
Serum Separator (Gold/Yellow) Tube


Minimum Volume
1 mL


Instructions
Protect from excessive exposure to light. 


Transport Temperature
Refrigerated


Specimen Stability
Room Temperature: 8 hours
Refrigerated: 48 hours
Frozen: 7 days


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


Reference Range
200 - 780 pg/mL


Performing Laboratory
This test is performed at the following locations:
  1. MercyOne Siouxland Medical Laboratory
  2. MercyOne Dakota Dunes Medical Laboratory



Last Updated: August 21, 2025


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.