title: Abbott AxSYM Vancomycin II assay: multicenter evaluation and interference studies.
abstract: The authors evaluated the performance characteristics of the Abbott AxSYM Vancomycin II immunoassay in sera of patients with (n = 93 samples) and without (n = 327 patients) renal dysfunction. Correlation of vancomycin measurements with the Abbott AxSYM Vancomycin, Abbott TDx/TDxFLx, Syva enzyme-multiplied immunoassay technique (EMIT), DuPont automated chemistry analyzer (ACA), and high-performance liquid chromatography methods showed acceptable correlation as indicated by: slope values >0.95, r-values >0.97, y-intercepts <1.7 microg/ml, and S(y/x) ranging from 9% to 15% of the average vancomycin value. The AxSYM Vancomycin II assay showed acceptable correlation with AxSYM vancomycin, TDx/TDxFLx, and high-performance liquid chromatography methods in 93 samples from patients with renal dysfunction. This monoclonal antibody-based assay showed no apparent interference from the presence of human antimouse antibody (HAMA) or the microbiologically inactive vancomycin crystalline degradation product (CDP). The authors conclude that the AxSYM Vancomycin II assay showed satisfactory agreement with other methods tested in this study.
authors.affiliation: Department of Pathology, University of Maryland School of Medicine, Baltimore, USA.
authors.forename: H M
authors.initials: HM
authors.lastname: Azzazy
authors.forename: P P
authors.initials: PP
authors.lastname: Chou
authors.forename: J H
authors.initials: JH
authors.lastname: Tsushima
authors.forename: S
authors.initials: S
authors.lastname: Troxil
authors.forename: M
authors.initials: M
authors.lastname: Gordon
authors.forename: R J
authors.initials: RJ
authors.lastname: Avers
authors.forename: E
authors.initials: E
authors.lastname: Chiappetta
authors.forename: S H
authors.initials: SH
authors.lastname: Duh
authors.forename: R H
authors.initials: RH
authors.lastname: Christenson
mesh_terms: D000900:Anti-Bacterial Agents / Q000097:blood* / Q000737:chemistry; D002138:Calibration; D002851:Chromatography, High Pressure Liquid / Q000592:standards; D004340:Drug Contamination / Q000517:prevention & control; D016903:Drug Monitoring / Q000379:methods / Q000592:standards*; D017248:Enzyme Multiplied Immunoassay Technique / Q000592:standards; D016231:Fluorescence Polarization Immunoassay / Q000379:methods / Q000592:standards*; D006801:Humans; D066298:In Vitro Techniques; D007239:Infections / Q000097:blood / Q000188:drug therapy / Q000209:etiology; D007674:Kidney Diseases / Q000097:blood / Q000150:complications; D016030:Kidney Transplantation / Q000502:physiology; D016014:Linear Models; D012016:Reference Values; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014640:Vancomycin / Q000097:blood* / Q000737:chemistry
chemical_list: D000900:Anti-Bacterial Agents; D014640:Vancomycin