Test Information:
Vitamin B12 is a member of the corrin family, is a cofactor for conversion of methylmalonyl Coenzyme-A (CoA) to succinoyl CoA, cofactor in synthesis of methionine, implicated in formation of myelin, and is required for DNA synthesis. This assay is for the quantitative determination of vitamin B12 in human serum and plasma to assess conditions associated with low or elevated levels.
Specimen Container:
Gold Top SST Tube (with clot activator) or Red Top Tube (Plain) – USE PLASTIC TUBE
Specimen Type:
Serum
Required Volume:
2 mL
Patient Preparation:
6 to 8 hours fasting
Notes:
The following information must be provided upon specimen endorsement via Internal Message or Remarks.
1. Date and time of last meal.
Storage & Stability
(Before Processing)
- Storage: 2 to 8°C
Stability: 48 hours - Storage: 15 to 25°C
Stability: 2 hours - Storage: -20°C
Stability: 56 days
FREEZE ONLY ONCE!
Transport Temperature:
Ref (2˚C – 8˚C)
Test Category:
Routine
Test Schedule:
Daily
Results Availability:
Within 4 hours