VITAMIN B12 (REFL)

Clinical Significance
Vitamin B12 (REFL) - B12 is decreased in pernicious anemia, total or partial gastrectomy, malabsorption and certain congenital biochemical disorders.

Preferred Specimen(s)
1 mL serum

Alternative Specimen(s)
Amber vial

Minimum Volume
0.5 mL

Transport Container
Serum Separator Tube (SST®)

Transport Temperature
Room temperature

Specimen Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days

Reject Criteria
Hemolysis

Setup Schedule

Includes
This is a client specific reflex test. Reflex criteria has been pre-defined by the ordering physician. Additional testing will be performed at an additional charge.

Methodology
Immunoassay (IA)

Reference Range(s)
≤4 Years    Not established
5-9 Years    250-1205 pg/mL
10-17 Years    260-935 pg/mL
>17 Years    200-1100 pg/mL