ESBL confirmatory test involved testing cefotaxime (30 μg) and ceftazidime (30 μg) alone and in combination with clavulanate (10 μg) on Mueller–Hinton agar. If the zone diameter increased ≥ 5 mm in the presence of clavulanate, the isolate was considered ESBL-producing. Escherichia coli ATCC 25,922 and Klebsiella pneumonia ATCC700603 (700,603.18) were used as quality controls.
Free full text: Click here