Test Details

Mnemonic

B12BC

Ordering Code

3681540

CPT-4 Code(s)

82608

Specimen Information

Patient Preparation

Patient should fast 12 - 15 hours prior to collection. Avoid B12 supplements within 72 hours of collection.
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Collect

Serum separator tube (SST)
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Specimen Preparation

Centrifuge, separate serum from cells and send 1.0 mL serum refrigerated in a screw capped plastic vial.
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Alternate Specimen

Serum: Red top
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Minimum Volume

0.1 mL
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Transport Temperature

Refrigerated
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Rejection Criteria

Plasma
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Stability

Room temperature: 6 hours
Refrigerated: 7 days
Frozen: 30 days
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Methodology

Quantitative Radioimmunoassay
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Reference Range

800 - 2600 pg/mL
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Performing Laboratory

ARUP Reference Laboratory
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New York DOH Approval Status

Yes
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