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Updated: Mar 2, 2026

Antimicrobial Synergy Testing by the Inkjet Printer-assisted Automated Checkerboard Array and the Manual Time-kill Method
Published on: April 18, 2019
Performance of the check-points check-MDR CT103XL assay utilizing the CDC/FDA antimicrobial resistance isolate bank
Eleanor A Powell1, David Haslam2, Joel E Mortensen1
1Department of Pathology and Laboratory Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH.
Abstract:
The Check-MDR CT103XL beta-lactamase assay was validated for use in the clinical microbiology laboratory using two CDC-FDA Antimicrobial Resistant Isolate Bank panels (133 gram-negative bacilli known beta-lactamase genes). The CT103XL detected most reported resistance genes (123 of 136 genes) and additionally identified several resistance genes not reported by the CDC. Discrepant results were confirmed via whole genome sequencing.
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