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HelpTest Code LAB67 Vitamin B12 Level
Clinical System Name
Vitamin B12 Level
Synonyms
Vit B12; Cobalamin; Cyanocobalamin
Sample Requirements
Specimen: Whole blood
Container(s): Gold SST, Red, Gold Microtainer, Lt. Green/Lithium Heparin Microtainer,
Preferred Vol: 1.0 mL
Minimum Vol: 0.5 mL
Processing Instructions
Reject due to: gross hemolysis
Spin: Y
Aliquot: Y
Temp: 2-8 C
Storage location: CPA refrigerator, FrigD rack. Serum/plasma should be removed from separator for storage.
Note:
Off-site collection: Spin blood. Transfer serum/plasma to plastic aliquot container. Refrigerate.
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| serum/plasma | Room temp | 3 d |
| Refrigerated | 7 d | |
| Frozen -20 C | 4 w |
Availability
| STAT | Performed | TAT |
|---|---|---|
| N | M,W,F, day shift | 1-4 d |
Performing Laboratory
Seattle Children's Laboratory
Department
Department: Chemistry
Location: Chem West
Phone Number: (206) 987-2617
CPT Codes
82607
Methodology
Method: Chemiluminescent microparticle immunoassay (CMIA) on the Alinity i
Analytical Volume: 0.125 mL serum/plasma
Limitations:
Reference Range
>213 pg/mL