Vitamin B12

Additional Information:


EPIC Test Name: VITAMIN B12

CPT Code(s):

82607

Collection Procedure:


Collect blood in SST tube. Allow to clot. Centrifuge and store refrigerated until transported to lab. If transportation will be delayed more than 8 hours, aliquot serum and freeze.

Specimen Requirements:


Specimen Type: Serum (preferred) or Plasma
Container/Tube: SST or Lithium Heparin (Green top)
Sample Volume: 1 mL
Minimum Volume: 0.2 mL (Repeat testing is not possible with this specimen volume.)
Storage: Refrigerate
Stability (collection to time of analysis/testing):

  • Refrigerated: 8 hours
  • Frozen: 6-8 weeks

Use:

This test aids in detection of vitamin B12 deficiency in individuals with macrocytic/unexplained anemia, or unexplained neurologic disease.

Methodology:


Solid-phase, competative chemiluminescent enzyme immunoassay involving an automated alkaline denaturation procedure.

Reported:


1-3 business days

Reference Values:

193 – 982 pg/mL