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Evaluation of VITEK 2, MicroScan, and Phoenix for identification of clinical isolates and reference strains

2011; Elsevier BV; Volume: 70; Issue: 4 Linguagem: Inglês

10.1016/j.diagmicrobio.2011.04.013

1879-0070

Won‐Young Jin, Sook‐Jin Jang, Min-Jung Lee, Geon Park, Min Jung Kim, Joong‐Ki Kook, Dong‐Min Kim, Dae‐Soo Moon, Young‐Jin Park,

Antibiotic Resistance in Bacteria

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.