Test Details
Mnemonic
VENLA
Ordering Code
3510990
CPT-4 Code(s)
80299
Specimen Information
Patient Preparation
Draw immediately before next dose. Also, appropriate is drawing 12 hours after an oral dose.
Collect
Red top
Specimen Preparation
Centrifuge, separate serum from cells within 2 hours of collection and send 1.0 mL serum in a screw capped plastic vial.
Minimum Volume
0.4 mL
Transport Temperature
Refrigerated
Rejection Criteria
SST, gross hemolysis, gross lipemia, gross icterus
Stability
Room temperature: 28 days
Refrigerated: 28 days
Frozen: 28 days
Refrigerated: 28 days
Frozen: 28 days
Methodology
Liquid Chromatography/Tandem Mass Spectrometry
Reference Range
Venlafaxine + O-desmethylvenlafaxine: 100 - 400 ng/mL
Performing Laboratory
Mayo Clinic Laboratories
New York DOH Approval Status
Yes