Test Overview
Test Methodology

Chemiluminescent Immunoassay (CLIA)

Test Usage

Detection of B12 deficiency as in pernicious anemia or neurologic disease or the elevation of B12 as seen in hepatic cell damage or myeloid leukemia.

Reference Range *

211 - 911 pg/mL

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Daily, 24 hours
Analytic Time

4 hours

Soft Order Code
VB12
MiChart Code
Vitamin B12
Synonyms
  • B12
  • VITB12
  • VITAMIN B12
  • VITAMIN B12 LEVEL
  • Cobalamins
Laboratory
Chemical Pathology
Section
Automation
Specimen Requirements
Collection Instructions

Collect specimen in SST tube. Avoid hemolysis of specimen. Centrifuge, aliquot serum into a plastic vial and freeze (preferred). Specimens may be stored refrigerated for up to 48 hours. Grossly hemolyzed samples are not acceptable for analysis.

Alternate Specimen
Red Top Tube; Green Top Tube (heparinized plasma); Lavender Top Tube (EDTA plasma)
Yellow Top Tube
Normal Volume
0.5 mL serum
Minimum Volume
0.25 mL serum
Storage Temperature
Specimens are stable for 8 hours at room temp and 48 hours refrigerated. [10/06]
Billing
CPT Code
82607
Fee Code
23325
LOINC
2132-9
NY State Approved
No
Resources