Test Details

Mnemonic

VB5

Ordering Code

3719380

CPT-4 Code(s)

84591

Specimen Information

Collect

Red-top
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Specimen Preparation

Centrifuge, separate serum from cells and send 1.2 mL serum frozen in a screw-capped plastic vial.
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Alternate Specimen

Plasma: Sodium or lithium heparin, EDTA
Serum: SST
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Minimum Volume

0.6 mL
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Transport Temperature

Frozen
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Stability

Room temperature: 6 hours
Refrigerated: 4 days
Frozen: 30 days
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Methodology

Liquid Chromatography/Tandem Mass Spectrometry
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Reference Range

<275 ng/mL
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Performing Laboratory

Quest Valencia
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