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
Refrigerated: Unacceptable
Frozen: 30 days
Methodology
Chromatography/Mass Spectrometry
Reference Range
<275 ng/mL
Performing Laboratory
Quest Valencia