| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Lamotrigine
MessagePerforming Lab: Regions
Test Code
3538
Alias/See Also
Sunquest: LALA; Lamictal
CPT Codes
80175
Preferred Specimen
0.5 mL Lithium Heparin Plasma (light green-top) tube
Minimum Volume
0.2 mL
Other Acceptable Specimens
Serum separator (gold-top), Red, Red/Gray
Transport Temperature
Refrigerated
Specimen Stability
Refrigerated: 7 days
Frozen: 4 weeks
Frozen: 4 weeks
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Whole Blood
Methodology
Enzyme Immunoassay
Setup Schedule
Daily
Report Available
Same Day
Limitations
Due to structural similarities with lamotrigine, high trimethoprim levels may interfere. Care should be taken when interpreting lamotragine results if trimethoprim is also being administered to the patient.
Reference Range
2.0 - 20.0 mcg/mL
Clinical Significance
Lamotrigine is used in the treatment of partial and generalized seizures, as adjunctive or monotherapy. Lamotrigine’s steady state elimination half life in healthy young adults is approximately 25 to 30 hours.
