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St. Michael's Hospital Laboratory
Test Directory



Order Name LAM
Athena Orderable:
Lamotrigine-S [amgw]
Revision Date 09/04/2020
Test Name Methodology LOINC Code
Quantitative Enzyme Immunoassay 6948-4 
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred See Instructions Frozen
RML test code: 4310575
Click here to view information on the RML website.

**Indicate collection time and time of last dose.
Separate from cells ASAP.
Testing Schedule M-F at Reference Facility  
Expected TAT 1-3 days  
Clinical Use Lamotrigine is an anticonvulsant drug used for the treatment of epilepsy. In addition, to its anticonvulsant properties, it is approved for the maintenance treatment of bipolar type I disorder. With monotherapy, lamotrigine has relatively few side-effects and generally doesn't lead to toxicity. However, clearance is altered by several other compounds an combination therapy with other anticonvulsant drugs can have a substantial effect on the clearnce of this drug. 
Rejection Criteria Specimens collected in gel separator tubes or have gross lipemia or hemolysis are unacceptable. 
Test Aliases Lamictal
CPT Code(s) 80175
Lab Section Reference Lab