ARUP's Laboratory Test Directory

Lamotrigine : 0090177

Mnemonic: LAMOT

Methodology: Enzyme Immunoassay
Performed: Sun-Sat
Reported: Within 24 hours
Specimen Required: Collect: Plain red. Also acceptable: Lavender (EDTA), pink (K2EDTA), or green (sodium or lithium heparin). Avoid use of separator tubes and gels.

Specimen Preparation: serum or plasma from cells and refrigerate ASAP or within two hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.3 mL)

Storage/Transport Temperature: Refrigerated.

Remarks: Separate serum or plasma from cells and refrigerate ASAP. Avoid use of separator tubes and gels.

Stability (collection to initiation of testing): After separation from cells: Ambient: 1 month; Refrigerated: 6 weeks; Frozen: 6 weeks
Reference Interval:
Therapeutic Range: Not well established.
Interpretive Data: The proposed therapeutic range for seizure control is 3-14 µg/mL.  Concentrations that exceed 15 µg/mL may contribute to adverse effects.  Pharmacokinetics varies widely, particularly with co-medications and/or compromised renal function.
CPT Code(s): 80299
Cross References: Lamictal (Lamotrigine)
 
 

 

 

 
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