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J Med Microbiol. 2013 May;62(Pt 5):773-7. doi: 10.1099/jmm.0.049361-0. Epub 2013 Jan 17.

A simple blood-culture bacterial pellet preparation for faster accurate direct bacterial identification and antibiotic susceptibility testing with the VITEK 2 system.

Author information

1
Institute of Microbiology, University of Lausanne and University Hospital Center, Lausanne, Switzerland.

Abstract

An ammonium chloride procedure was used to prepare a bacterial pellet from positive blood cultures, which was used for direct inoculation of VITEK 2 cards. Correct identification reached 99% for Enterobacteriaceae and 74% for staphylococci. For antibiotic susceptibility testing, very major and major errors were 0.1 and 0.3% for Enterobacteriaceae, and 0.7 and 0.1% for staphylococci, respectively. Thus, bacterial pellets prepared with ammonium chloride allow direct inoculation of VITEK cards with excellent accuracy for Enterobacteriaceae and a lower accuracy for staphylococci.

PMID:
23329320
DOI:
10.1099/jmm.0.049361-0
[Indexed for MEDLINE]
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