title: Determination of atorvastatin in human serum by reversed-phase high-performance liquid chromatography with UV detection.
abstract: A rapid and sensitive high-performance liquid chromatographic method was validated and described for determination of atorvastatin in human serum. Following liquid-liquid extraction of the drug and an internal standard (sodium diclofenac), chromatographic separation was accomplished using C18 analytical column with a mobile phase consisting of sodium phosphate buffer (0.05 M, pH 4.0) and methanol (33:67, v/v). Atorvastatin and the internal standard were detected by ultraviolet absorbance at 247 nm. The average recoveries of the drug and internal standard were 95 and 80%, respectively. The lower limits of detection and quantification were 1 and 4 ng/ml, respectively, and the calibration curves were linear over a concentration range of 4-256 ng/ml of atorvastatin in human serum. The analysis performance was studied and the method was applied in a randomized cross-over bioequivalence study of two different atorvastatin preparations in 12 healthy volunteers.
authors.affiliation: Medical Biology Research Center, Medical School, Karmanshah University of Medical Sciences, Kermanshah 6714869914, Iran; School of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, Iran. gbahrami@kums.ac.ir
authors.forename: Gholamreza
authors.initials: G
authors.lastname: Bahrami
authors.forename: Bahareh
authors.initials: B
authors.lastname: Mohammadi
authors.forename: Shahla
authors.initials: S
authors.lastname: Mirzaeei
authors.forename: Amir
authors.initials: A
authors.lastname: Kiani
mesh_terms: D000069059:Atorvastatin; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D006538:Heptanoic Acids / Q000097:blood* / Q000493:pharmacokinetics; D006801:Humans; D011758:Pyrroles / Q000097:blood* / Q000493:pharmacokinetics; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013056:Spectrophotometry, Ultraviolet / Q000379:methods
chemical_list: D006538:Heptanoic Acids; D011758:Pyrroles; D000069059:Atorvastatin