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Volume 21, Issue 2

A collaborative evaluation of a rapid, semi-automated identification system for gram-negative bacilli: the Quantum II BID Free

Abstract

Summary

The recently-introduced semi-automated bacterial identification system, the Quantum II BID, is designed to identify fermentative and non-fermentative gram-negative bacilli in 4−5 h. The system was evaluated independently by the two participating laboratories. Inter-laboratory reproducibility was determined by testing 181 strains in each laboratory and found to be 97.8%. A further 893 organisms, comprising 417 fresh clinical isolates and 476 stock cultures, were then tested by the system in the two laboratories. Of the fresh clinical isolates, 95.7% yielded the same result as the comparative system used (API 20E) and 93.1% of the stock strains were assigned to their expected, previously established identity. Overall agreement between the two systems for all strains examined was 94.3%. There was no significant statistical difference between the results obtained in the two laboratories.

  • Received:
  • Accepted:
  • Published Online:
© Society for General Microbiology, 1986
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1986-03-01
2024-04-18
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A collaborative evaluation of a rapid, semi-automated identification system for gram-negative bacilli: the Quantum II BID
J. Med. Microbiol. 21, 145 (1986); https://doi.org/10.1099/00222615-21-2-145
/content/journal/jmm/10.1099/00222615-21-2-145
/content/journal/jmm/10.1099/00222615-21-2-145
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