Rapid identification of group D streptococci with the API 20S system

J. H. Jorgensen, S. A. Crawford, G. A. Alexander

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


The API 20S system (Analytab Products) was evaulated as a means of identifying 209 isolates of Lancefield group D streptococci to the species level. Results were compared with those from a conventional tube biochemical identification system and from serological grouping. Use of the latest 20S computerized data base allowed species identification of 97% (203 of 209) of test isolates after a 4-h incubation period and 99% (208 of 209) of test isolates if supplemental overnight biochemical tests were used to clarify the identity of five Streptococcus bovis-variant isolates. The API 20S system appears to be a convenient and accurate method for rapid, same-day species identification of group D streptococci.

Original languageEnglish (US)
Pages (from-to)1096-1098
Number of pages3
JournalJournal of clinical microbiology
Issue number6
StatePublished - 1983
Externally publishedYes

ASJC Scopus subject areas

  • Microbiology (medical)


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