title: Validated HPLC-MS-MS method for determination of azithromycin in human plasma.
abstract: A validated, highly sensitive, and selective HPLC method with MS-MS detection has been developed for quantitative determination of azithromycin (AZI) in human Na2EDTA plasma. Roxithromycin (ROX) was used as internal standard. Human plasma containing AZI and internal standard was ultrafiltered through Centrifree Micropartition devices and the concentration of AZI was determined by isocratic HPLC-MS-MS. Multiple reaction monitoring mode (MRM) was used for MS-MS detection. The calibration plot was linear in the concentration range 2.55-551.43 ng mL(-1). Inter-day and Intra-day precision and accuracy of the proposed method were characterized by R.S.D and percentage deviation, respectively; both were less than 8%. Limit of quantification was 2.55 ng mL(-1). The proposed method was used to determine the pharmacokinetic profile of AZI (250-mg tablets).
authors.affiliation: Bioanalytical Laboratory, Cepha s.r.o., 32300, Plzen, Czech Republic.
authors.forename: B
authors.initials: B
authors.lastname: Barrett
authors.forename: V
authors.initials: V
authors.lastname: Borek-Dohalský
authors.forename: P
authors.initials: P
authors.lastname: Fejt
authors.forename: S
authors.initials: S
authors.lastname: Vaingátová
authors.forename: J
authors.initials: J
authors.lastname: Huclová
authors.forename: B
authors.initials: B
authors.lastname: Nemec
authors.forename: I
authors.initials: I
authors.lastname: Jelínek
mesh_terms: D000900:Anti-Bacterial Agents / Q000097:blood / Q000737:chemistry; D017963:Azithromycin / Q000097:blood*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004492:Edetic Acid / Q000097:blood; D006801:Humans; D013058:Mass Spectrometry / Q000379:methods*; D012016:Reference Values; D015203:Reproducibility of Results; D015575:Roxithromycin / Q000737:chemistry; D012680:Sensitivity and Specificity; D013997:Time Factors; D014462:Ultrafiltration
chemical_list: D000900:Anti-Bacterial Agents; D015575:Roxithromycin; D017963:Azithromycin; D004492:Edetic Acid