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 1.2 mL serum in a screw capped plastic vial.
Alternate Specimen
Plasma: Sodium or lithium heparin, EDTA
Serum: Serum separator tube (SST)
Serum: Serum separator tube (SST)
Minimum Volume
0.6 mL
Transport Temperature
Frozen
Stability
Room temperature: 6 hours
Refrigerated: 4 days
Frozen: 30 days
Refrigerated: 4 days
Frozen: 30 days
Methodology
Liquid Chromatography/Tandem Mass Spectrometry
Reference Range
<275 ng/mL
Performing Laboratory
Quest Valencia