NDLI: Comparison of Three Commercial Rapid Identification Systems for the Unusual Gram-Positive Cocci Dolosigranulum pigrum, Ignavigranum ruoffiae, and Facklamia Species

Content Provider	PubMed Central
Author	Laclaire, Leslye L. Facklam, Richard R.
Copyright Year	2000
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.
Starting Page	2037
File Format	PDF
ISSN	1098660X
e-ISSN	1098660X
Journal	Journal of Clinical Microbiology
Issue Number	6
Volume Number	38
Language	English
Publisher	American Society for Microbiology
Publisher Date	2000-06-01
Access Restriction	Open
Rights Holder	American Society for Microbiology
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Microbiology (medical)

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