Lamotrigine Level
| Abbrev Code: | LAMTR | ||
| Order Code: | LAB6977 | Order Name: | Lamotrigine Level |
| Synonyms: | Lamictal | ||
| Methodology: | Quantitative enzyme immunoassay | ||
| CPT Codes: | 80175 x1 | ||
| Turnaround Time: | Specimens are sent to the reference laboratory Sun-Sat; results are reported within 24 hours, | ||
Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | 2 mL |
| Minimum\Peds Volume: | 0.8 mL |
| Container: | Red (no gel) Alternate Containers: Green (lithium heparin, no gel), Green (sodium heparin, no gel), Purple (EDTA) |
| Collection Instructions: | Usual sampling time is immediately prior to next dose (trough). |
| Causes for Rejection: | Serum or plasma separator tubes. Grossly hemolyzed specimens. |
Processing and Shipping
| Specimen Processing: | Within 2 hours of collection: centrifuge and aliquot 1 mL, 0.3 mL minimum. Store at room temperature. |
| Shipping Instructions: | Ship at room temperature. |
| Stability: | After separation from cells: 7 days at room temperature or refrigerated; 4 weeks frozen. |
| Test Performed at or Referral Lab | Lab Sendouts (ARUP) |
| Referral Lab number: | 90177 |
Interpretive
| Critical Range: | Toxic: ≥20 ug/mL |
| Therapeutic Range: | 2.5-15.0 ug/mL |
| Use: | Optimize drug therapy and monitor patient adherence. |
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