Lamotrigine

Test Code

LAMO

Quest Code

22060

Alias/See Also

Lamictal

CPT Codes
80175

Preferred Specimen

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

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

Minimum Volume

0.5 mL

Other Acceptable Specimens

Plasma collected in: EDTA (lavender-top) tube or sodium heparin (green-top) tube

Instructions

Do not use gel barrier/Serum Separator tubes

Transport Temperature

Refrigerated (cold packs)

Specimen Stability

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

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Gross hemolysis • Grossly lipemic • Gel barrier/Serum separator tube (SST)

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

Setup Schedule

P.M. Sets up 5 days a week.

Reference Range

2.5-15.0 mcg/mL

Clinical Significance

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

Performing Laboratory
Quest Diagnostics Valencia Nichols Institute
27027 Tourney Road
Valencia, CA 91355-5386

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.