Vitamin B12

Cleveland Heartlab Test, V, Vitamins/Supplements


CPT Code: 82607
Order Code: 927
ABN Requirement: No
Alternative Name(s): Cobalamin, Cyancobalamin
: Serum
Volume:  1.0 mL
Minimum Volume:  0.5 mL
Container: Gel-barrier tube (SST)


  1. Collect and label sample according to standard protocols.
  2. Gently invert tube 5 times immediately after draw. DO NOT SHAKE.
  3. Allow blood to clot 30 minutes.
  4. Centrifuge for 10 minutes.

Transport: Store serum at 2°C to 8°C after collection and ship the same day per packaging instructions included with the provided shipping box.


Ambient (15-25°C): 7 days
Refrigerated (2-8°C):
7 days
Frozen (-20°C):
28 days

Causes for Rejection: Specimens other than serum; improper labeling; samples not stored properly; samples older than stability limits; hemolysis

Methodology: Immunoassay (IA)

Turn Around Time:  1 to 3 days

Reference Range:

Age pg/mL
≤4 years Not Established
5-9 years 250-1205
10-17 years 260-935
>17 years 200-1100

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

The CPT codes provided 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 payer being billed.