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Characterization of four carbapenemase methods for detecting blaKPC-76 variant. (A) mCIM result showed a zone diameter of 22 mm, indicating carbapenemase negative. (B) APB/EDTA method, (panel B1) ertapenem (10 μg), 10 mm; (panel B2) ertapenem plus APB (300 μg), 12 mm; (panel B3) ertapenem plus EDTA (292 μg), 12 mm; (panel B4) ertapenem plus APB and EDTA, 13 mm; judged as carbapenemase negative. (C) NG-test Carba 5:negative. (D) GeneXpert Carba-R: KPC positive.
