Evaluation of buffy coat 16S rRNA PCR, buffy coat culture and whole blood PCR for detection of bacteraemia
College
College of Science
Department/Unit
Biology
Document Type
Article
Source Title
Memorias do Instituto Oswaldo Cruz
Volume
105
Issue
2
First Page
117
Last Page
122
Publication Date
1-1-2010
Abstract
The use of Gram type-specific PCR on buffy coat from clinical specimens for the detection of bacteraemia was evaluated for the first time using whole blood culture as the gold standard. In addition, the established buffy coat culture and whole blood PCR were also compared. Gram-positive bacteria belonging to six species and Gramnegative bacteria from 10 species were isolated and identified by culture and detected using broad-range 16S rDNA primers and Gram-specific primers. Data from the three methods all conferred very high sensitivity, specificity, positive and negative predictive values when compared to whole blood culture. The Kappa coefficients of agreement were 0.9819 (buffy coat PCR), 0.9458 (whole blood PCR) and 1.0 (buffy coat culture), which establishes their validity as alternative methods to routine blood culture in detecting bacteraemia. In addition, results showed that there was a direct correlation of WBC counts greater than 12,000 cells per mm3 to the occurrence of bacteraemia as detected by the four methods (p < 0.05).
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Digitial Object Identifier (DOI)
10.1590/s0074-02762010000200001
Recommended Citation
Valle, D. L., Andrade, J. I., Cabrera, E. C., & Rivera, W. L. (2010). Evaluation of buffy coat 16S rRNA PCR, buffy coat culture and whole blood PCR for detection of bacteraemia. Memorias do Instituto Oswaldo Cruz, 105 (2), 117-122. https://doi.org/10.1590/s0074-02762010000200001
Disciplines
Biology
Keywords
Bacteremia; Blood—Examination; Leucocytes; Polymerase chain reaction
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