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Vitamin B12
Test CodeLAB67
Alias/See Also
LAB67, B12, Cobalamin, 82607
CPT Codes
82607
Preferred Specimen
4.5 ml (1.5 ml minimum) lithium heparin (green); alternate-SST (gold) or Red (no additive)
Minimum Volume
1 ml (500 ul minimum) plasma; alternate-serum
Instructions
After centrifugation, if not in gel barrier tube, pour off plasma or serum into an aliquot tube
Transport Temperature
Room temp
Specimen Stability
Separated from cells: 8 hours room temp, 24 hours refrigerated
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemoglobin: Any, Bilirubin: >10 mg/dL, Lipemia: >1800 mg/dL triglycerides
Methodology
Binding Immunoenzymatic
Setup Schedule
Mon- Sun
Reference Range
180–914 pg/mL
Clinical Significance
Vitamin B12 quantitative determination in human serum and plasma.
Performing Laboratory
Piedmont Athens Regional
