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Multicenter evaluation of the Quidel Lyra Direct C. difficile nucleic acid amplification assay.

Abstract：

:Clostridium difficile is a Gram-positive bacterium commonly found in health care and long-term-care facilities and is the most common cause of antibiotic-associated diarrhea. Rapid detection of this bacterium can assist physicians in implementing contact precautions and appropriate antibiotic therapy in a timely manner. The purpose of this study was to compare the clinical performance of the Quidel Lyra Direct C. difficile assay (Lyra assay) (Quidel, San Diego, CA) to that of a direct cell culture cytotoxicity neutralization assay (CCNA) and enhanced toxigenic culture. This study was performed at three geographically diverse laboratories within the United States using residual stool specimens submitted for routine C. difficile testing. Residual samples were tested using the Lyra assay on three real-time PCR platforms, and results were compared to those for direct CCNA and enhanced toxigenic culture. The test results for all platforms were consistent across all three test sites. The sensitivity and specificity of the Lyra assay on the SmartCycler II, ABI 7500 Fast DX, and ABI QuantStudio DX instruments compared to CCNA were 90.0% and 93.3%, 95.0% and 94.2%, and 93.8% and 95.0%, respectively. Compared to enhanced toxigenic culture, the sensitivity and specificity of the Lyra assay on the SmartCycler II, ABI 7500, and QuantStudio instruments were 82.1% and 96.9%, 89.3% and 98.8%, and 85.7% and 99.0%, respectively. Overall, the Lyra assay is easy to use and versatile and compares well to C. difficile culture methods.

journal_name

J Clin Microbiol

journal_title

Journal of clinical microbiology

authors

Beck ET,Buchan BW,Riebe KM,Alkins BR,Pancholi P,Granato PA,Ledeboer NA

doi

10.1128/JCM.03089-13

subject

Has Abstract

pub_date

2014-06-01 00:00:00

pages

1998-2002

issue

6

eissn

0095-1137

issn

1098-660X

pii

JCM.03089-13

journal_volume

52

pub_type

杂志文章,多中心研究

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