title: Validated high-performance liquid chromatographic method for the determination of lamotrigine in human plasma.
abstract: A high-performance liquid chromatographic (HPLC) procedure for lamotrigine was developed and validated. Lamotrigine (LTG) and an internal standard were extracted from plasma using liquid-liquid extraction under alkaline conditions into an organic solvent. The method was linear in the range 0.78-46.95 micromol/l, with a mean coefficient of correlation (r)> or =0.99923. The limit of detection (LOD) and limit of quantification (LOQ) were 0.19 and 0.58 micromol/l, respectively. Within- and between-run precision studies demonstrated C.V.<3% at all tested concentrations. LTG median recovery was 86.14%. Antiepileptic drugs tested did not interfere with the assay. The method showed to be appropriate for monitoring LTG in plasma samples.
authors.affiliation: Departamento de Análises Clínicas e Toxicológicas, Faculdade de Ciências Farmacêuticas da Universidade de São Paulo, Brazil.
authors.forename: N R
authors.initials: NR
authors.lastname: Barbosa
authors.forename: A F
authors.initials: AF
authors.lastname: Mídio
mesh_terms: D000927:Anticonvulsants / Q000097:blood*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D006801:Humans; D000077213:Lamotrigine; D012015:Reference Standards; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013056:Spectrophotometry, Ultraviolet; D014227:Triazines / Q000097:blood*
chemical_list: D000927:Anticonvulsants; D014227:Triazines; D000077213:Lamotrigine