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Anaerobic radiometric detection of facultative gram-positive cocci in blood

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Abstract

Radiometric detection of facultative gram-positive cocci, particularly streptococci, has been reported to be suboptimal. A recently marketed anaerobic Bactec bottle (7C) with purportedly improved capability to detect facultative gram-positive cocci in blood was compared with the previously available bottle in a study of simulated bacteremia. The Bactec system detected all betahemolytic streptococci and enterococci tested. Detection of alpha-hemolytic streptococci was improved in general. However, detection ofStreptococcus mutans, Streptococcus bovis andStreptococcus pneumoniae remained suboptimal under anaerobic conditions. A metabolic index unit threshold for positivity of 15 is recommended when employing the anaerobic Bactec bottle.

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Authors and Affiliations

  1. Department of Pathology, St. Luke's Hospital, 18015, Bethlehem, Pennsylvania, USA

    D. G. Beckwith, W. C. Conyers & D. C. Etowski

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  1. D. G. Beckwith
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  2. W. C. Conyers
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  3. D. C. Etowski
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Beckwith, D.G., Conyers, W.C. & Etowski, D.C. Anaerobic radiometric detection of facultative gram-positive cocci in blood. Eur. J, Clin. Microbiol. 1, 212–216 (1982). https://doi.org/10.1007/BF02019710

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  • DOI: https://doi.org/10.1007/BF02019710

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