Three phenotypic methods (modified Hodge test, chromogenic agar, and meropenem discs combined with specific inhibitors) used for the detection of carbapenemase activity were tested on a panel of characterized Enterobacteriaceae expressing various β-lactamase mechanisms. Overall, the meropenem-plus-inhibitor approach was more sensitive and specific than the other methods, despite its limitation of being unable to detect class D carbapenemases.
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Seah et al. (2011) studied this question.
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