Lamotrigine

Test Code
22060


CPT Codes
80175

Preferred Specimen
1 mL serum collected in a red-top tube (no gel)


Patient Preparation
Draw 1/2 hour to 1 hour before next dose at steady-state.

Minimum Volume
0.5 mL


Other Acceptable Specimens
Plasma collected in: EDTA (lavender-top), or sodium heparin (green-top) tube


Transport Container
Plastic screw-cap vial


Transport Temperature
Refrigerated (cold packs)


Specimen Stability
Room temperature: 48 hours
Refrigerated: 5 days
Frozen: 14 days


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gel barrier/serum separator tube • Gross lipemia • Gross hemolysis


Methodology
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)

FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Setup Schedule
Set up: Tues-Sat a.m.; Report available: 2 days


Reference Range
4.0-18.0 mcg/mL


Clinical Significance
Lamotrigine is an anticonvulsant drug used as adjunctive treatment for refactory partial seizures.


Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.