Abstract
The ability of the expanded API-20E and the Oxi-Ferm System to identify 176 isolates of nonfermenting or oxidase-positive, gram-negative rods from 17 species or groups was studied. The expanded API-20E, without referral to a computer reference center, was able to identify 61.4% of the isolates to the species level. If reference to the computer center was utilized, an additional 25% could be identified. Of the isolates examined, 13.6% were misidentified, partially identified, or assigned no identification. Those assigned to the incorrect genus constituted 0.5% of the isolates tested; those assigned to the correct genus, but the wrong species, constituted 0.5%; 4.5% were placed in the correct genus with no species given; and 7.9% were assigned no identification. The Oxi-Ferm System was able to assign 75% of the isolates to the correct species without further testing, and an additional 19.3% required additional testing for correct identification. Those assigned to the incorrect genus represented 3.4% of the isolates tested; 1.1% were assinged to the correct genus, but the wrong species; and 1.1% were assigned to the correct genus, with no species indicated.
Full text
PDF
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Isenberg H. D., Sampson-Scherer J. Clinical laboratory evaluation of a system approach to the recognition of nonfermentative or oxidase-producing gram-negative, rod-shaped bacteria. J Clin Microbiol. 1977 Mar;5(3):336–340. doi: 10.1128/jcm.5.3.336-340.1977. [DOI] [PMC free article] [PubMed] [Google Scholar]