Test Details

Mnemonic

B12

Ordering Code

1000760

CPT-4 Code(s)

82607

Specimen Information

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

Plasma: Lavender EDTA
Serum: Red top
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Minimum Volume

0.5 mL
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Transport Temperature

Refrigerated
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Rejection Criteria

Grossly hemolyzed or grossly lipemic specimens, heparin plasma
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Stability

Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days
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Methodology

Immunoassay
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Reference Range

See report
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Performing Laboratory

Quest Valencia
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