Vanderbilt Pathology Laboratory Services
Test Directory
LAMOTRIGINE (LMT)
Department: ToxicologyTest Synonym(s): Lamictal, LMT
CPT Codes: 80299
Methodology: HPLC-UV
Reference Range: 2-20 mcg/mL. There is increased incidence of adverse effects with trough concentrations above 15 mcg/mL.
Tube Type: Dark green top (Sodium Heparin)
Specimen: Serum or plasma
Alternate Specimen: Plain red top (no gel), Lavender top (EDTA)
Pediatric Requirements: Red or dark green microtainer
Volume: 0.5 mL serum/plasma
Minimum Volume: 0.1 mL
Temperature: Refrigerated
Stability: Refrigerated: 7 days
Reasons for Rejection: Specimen collected in a gel tube
Days Performed: Monday - Friday
Times Performed: after 1:00 pm (specimens must be received before 1:00 to be processed the same day)
TAT: 24 hours
Special Instructions: Specimen must be received in lab by 1:00 pm to be processed the same day. Specimen cannot be collected in a gel tube.
Search Tests
Search Help
Search Options for the Test Directory:
1. Enter the test name in the Keyword search field.
Hint: You can also enter any part of the test name to expand the search.
(Example: you can type "west" or "sed" or "rate" to find Westergren Sedimentation Rate)
2. Enter the Vanderbilt Test Code, if known.
3. Choose one of the letter boxes to display a list of all test names and keywords starting with that letter.
If you are unable to find a test in our directory, please contact VPLS at
1-800-551-5227 or e-mail emily.k.thompson@vanderbilt.edu.
