title: Evaluation of VITEK 2, MicroScan, and Phoenix for identification of clinical isolates and reference strains.
abstract: To compare the identification accuracies of VITEK 2 (bioMérieux), MicroScan (Siemens Healthcare), and Phoenix (Becton Dickinson), microbial identification was performed on 160 clinical isolates and 50 reference strains on each of these 3 systems, using the appropriate identification kit provided by each system. Of the 142 clinical isolates that were identified at the species level, VITEK 2, MicroScan, and Phoenix correctly identified 93.7%, 82.4%, and 93.0%, and incorrectly identified 2.1%, 7.0%, and 0%, respectively. In the reference strain tests, VITEK 2, MicroScan, and Phoenix correctly identified 55.3%, 54.4%, and 78.0% of the reference strains at the species level and incorrectly identified 10.6%, 13.0%, and 6.0% of the reference strains, respectively. In conclusion, the identification rate of VITEK 2, Phoenix, and MicroScan was high or acceptable on clinical isolates. Phoenix showed a significantly higher performance than VITEK 2 or MicroScan in identifying the reference strains.
authors.affiliation: Department of Laboratory Medicine, Chosun University Medical School, Gwang-Ju, South Korea.
authors.forename: Won-Young
authors.initials: WY
authors.lastname: Jin
authors.forename: Sook-Jin
authors.initials: SJ
authors.lastname: Jang
authors.forename: Min-Jung
authors.initials: MJ
authors.lastname: Lee
authors.forename: Geon
authors.initials: G
authors.lastname: Park
authors.forename: Min-Jung
authors.initials: MJ
authors.lastname: Kim
authors.forename: Joong-Ki
authors.initials: JK
authors.lastname: Kook
authors.forename: Dong-Min
authors.initials: DM
authors.lastname: Kim
authors.forename: Dae-Soo
authors.initials: DS
authors.lastname: Moon
authors.forename: Young-Jin
authors.initials: YJ
authors.lastname: Park
mesh_terms: D001419:Bacteria / Q000145:classification* / Q000302:isolation & purification*; D001424:Bacterial Infections / Q000175:diagnosis*; D001431:Bacteriological Techniques / Q000379:methods*; D003951:Diagnostic Errors / Q000706:statistics & numerical data; D006801:Humans; D012680:Sensitivity and Specificity