Abstract:
:We evaluated three rapid identification systems-The Biomerieux rapid ID 32 STREP (ID32), the BBL Crystal rapid gram-positive identification (Crystal), and the Remel IDS RapID STR (IDS) systems-for their ability to identify 7 strains of Alloiococcus otitidis, 27 strains of Dolosigranulum pigrum, 3 strains of Ignavigranum ruoffiae, and 18 strains of 4 different Facklamia species. Since none of these six species of gram-positive cocci are included in the identification databases for these systems, the correct identification for the strains tested should be "unacceptable ID" for the ID32 and Crystal systems or "no choice" for the IDS system. The ID32 system identified all 27 strains of D. pigrum, 6 of 18 Facklamia species, and 2 of 3 cultures of I. ruoffiae as "unacceptable ID." The Crystal system identified 10 of 27 D. pigrum, 2 of 18 Facklamia species, and 2 of 3 I. ruoffiae strains as "unacceptable ID." The IDS system identified only 1 culture of D. pigrum as "no choice," but it also identified 2 cultures of D. pigrum as a "questionable microcode" and 19 cultures of D. pigrum as an "inadequate ID, E. faecalis 90%, S. intermedius 9%." A total of 2 of the 18 cultures of Facklamia and all 3 of the I. ruoffiae cultures were correctly identified as "no choice." The most common misidentifications of Facklamia species by the ID32 and IDS systems were as various Streptococcus species and as Gemella species. In the Crystal system, the most common erroneous identification was Micrococcus luteus. These data indicate the need for the commercial manufacturers of these products to update their databases to include newly described species of gram-positive cocci.
journal_name
J Clin Microbioljournal_title
Journal of clinical microbiologyauthors
LaClaire LL,Facklam RRsubject
Has Abstractpub_date
2000-06-01 00:00:00pages
2037-42issue
6eissn
0095-1137issn
1098-660Xjournal_volume
38pub_type
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journal_title:Journal of clinical microbiology
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