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HelpTest Code LAMOT Lamotrigine, Serum
Additional Codes
EMR Interface Order Code: 04560
Reporting Name
Lamotrigine, SUseful For
Monitoring serum concentration of lamotrigine
Assessing compliance
Adjusting lamotrigine dose in patients receiving other anticonvulsant drugs which interact pharmacokinetically with lamotrigine
Performing Laboratory
Mayo Medical Laboratories in Rochester
Specimen Type
SerumSpecimen Required
Container/Tube:
Preferred: Red top
Acceptable: Serum gel
Specimen Volume: 1 mL
Collection Instructions: Draw specimen immediately before next scheduled dose or at least 12 hours after last dose.
Specimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 28 days |
| Ambient | 28 days | |
| Frozen | 28 days |
Reference Values
Patients receiving therapeutic doses usually have lamotrigine concentrations of 2.5-15.0 mcg/mL.
Day(s) and Time(s) Performed
Monday through Friday; Continuous until 2 p.m.
Saturday; Continuous until 1 p.m.
Sunday; 11 a.m.
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.CPT Code Information
80175
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| LAMO | Lamotrigine, S | 6948-4 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 80999 | Lamotrigine, S | 6948-4 |
Reject Due To
|
Hemolysis |
Mild OK; Gross OK |
|
Lipemia |
Mild OK; Gross OK |
|
Icterus |
Mild OK; Gross OK |
|
Other |
NA |
Method Name
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Forms
If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:
Neurology Specialty Testing Client Test Request (T732) (http://www.mayomedicallaboratories.com/it-mmfiles/neurology-request-form.pdf)
General Request Form (T239) (http://www.mayomedicallaboratories.com/it-mmfiles/general-request-form.pdf)