Test Details

Mnemonic

VAAF

Ordering Code

3423740

CPT-4 Code(s)

80165

Specimen Information

Patient Preparation

Collect trough sample (1 hour before next dose). Avoid contact of samples with plasticizers, fatty acids, varnishes, paint fumes.

Collect

Red-top

Specimen Preparation

Centrifuge, separate serum from cells and send 3.0 mL serum refrigerated in a screw-capped plastic vial.

Alternate Specimen

Serum: Dark blue trace element no additive
Plasma: Lavender EDTA, dark blue EDTA

Minimum Volume

1.0 mL

Transport Temperature

Refrigerated

Rejection Criteria

SST

Stability

Room temperature: 48 hours
Refrigerated: 7 days
Frozen: 60 days

Methodology

Immunoassay
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Reference Range

4.8 - 17.3 mg/L
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Performing Laboratory

Quest Valencia
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