Test Details

Mnemonic

VB5

Ordering Code

3719380

CPT-4 Code(s)

84591

Specimen Information

Collect

Red top

Specimen Preparation

Centrifuge, separate serum from cells and send 1.0 mL serum in an amber screw capped plastic vial. PROTECT FROM LIGHT.

Alternate Specimen

Plasma: Sodium heparin, EDTA; PROTECT FROM LIGHT

Minimum Volume

0.5 mL

Transport Temperature

Frozen

Rejection Criteria

Serum separator tube (SST)

Stability

Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 30 days

Methodology

Chromatography/Mass Spectrometry
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Reference Range

<275 ng/mL
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Performing Laboratory

Quest
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New York DOH Approval Status

Yes
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