A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Vitamin B12
Test Code927
CPT Codes
82607
Preferred Specimen
1 mL serum
Minimum Volume
0.5 mL
Other Acceptable Specimens
Serum in an amber vial
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Rrefrigerated: 7 days
Frozen: 28 days
Rrefrigerated: 7 days
Frozen: 28 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis
Methodology
Immunoassay (IA)
Setup Schedule
Set up: Daily; Report available: Next day
Reference Range
≤4 Years | Not established |
5-9 Years | 250-1205 pg/mL |
10-17 Years | 260-935 pg/mL |
>17 Years | 200-1100 pg/mL |
Clinical Significance
B12 is decreased in pernicious anemia, total or partial gastrectomy, malabsorption and certain congenital and biochemical disorders.
Performing Laboratory
Quest Diagnostics Nichols Institute |
14225 Newbrook Drive |
Chantilly, VA 20153 |