Test Details
Mnemonic
VB2
Ordering Code
3422140
CPT-4 Code(s)
84252
Specimen Information
Patient Preparation
Avoid vitamin supplements for 24 hours prior to draw. Overnight fasting required.
Collect
Lavender EDTA
Specimen Preparation
Centrifuge, separate plasma from cells and send 2.0 mL in an amber screw capped plastic vial. PROTECT FROM LIGHT.
Minimum Volume
0.5 mL
Transport Temperature
Frozen
Rejection Criteria
Serum separator tube (SST) or Plasma separator tube (PST)
Stability
Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 30 days
Refrigerated: Unacceptable
Frozen: 30 days
Methodology
Chromatography/Mass Spectrometry
Reference Range
6.2 - 39.0 nmol/L
Performing Laboratory
Quest Valencia
New York DOH Approval Status
Yes