Test Details

Mnemonic

VITB6

Ordering Code

1060140

CPT-4 Code(s)

84207

Specimen Information

Patient Preparation

Fast overnight, no alcohol and vitamins 24 hours prior to sample collection. Infant: draw prior to next feeding.
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Collect

Lavender EDTA
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Specimen Preparation

Centrifuge, separate plasma from cells and send 1.0 mL plasma frozen (within 6 hours) in an amber screw-capped plastic vial. PRTOECT FROM LIGHT. CRITICAL FROZEN.
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Alternate Specimen

Serum: Red-top or SST
Plasma: Green sodium heparin, green lithium heparin
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Minimum Volume

0.5 mL
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Transport Temperature

Critical frozen
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Rejection Criteria

Specimen not protected from light.
Specimen not frozen.
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Stability

Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 14 days
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Methodology

High Performance Liquid Chromatography
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Reference Range

5 - 50 µg/L
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Performing Laboratory

Warde Medical Laboratory
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