Antibiogram (EUCAST / BrCAST)

Disk diffusion zone interpreter using EUCAST clinical breakpoints (BrCAST Brazilian edition). Select the bacterial group and enter the measured diameters.

Source: EUCAST · Clinical Breakpoint Tables v16.1 · effective 24/06/2026

Isolate group

E. coli, Klebsiella spp., Proteus, Enterobacter, Serratia, Citrobacter, Salmonella and Shigella.

Mueller-Hinton • 0.5 McFarland inoculum • 35 ± 1 °C, ambient air, 18 ± 2 h

Zones for tested batch

0 of 19 discs filled

Fill in only the discs you placed on the plate. Accepted values: 6 to 60 mm.

Species / subgroupInfection site

Penicillins

AmpicillinDisc 10 µgmmAmpicillin-sulbactamDisc 10-10 µgmmAmoxicillin-clavulanateDisc 20-10 µgmmPiperacillin-tazobactamDisc 30-6 µgmm

Cephalosporins

CeftriaxoneDisc 30 µgmmCefotaximeDisc 5 µgmmCeftazidimeDisc 10 µgmmCefepimeDisc 30 µgmm

Carbapenems

ErtapenemDisc 10 µgmmImipenemDisc 10 µgmmMeropenemDisc 10 µgmm

Fluoroquinolones and aminoglycosides

CiprofloxacinDisc 5 µgmmLevofloxacinDisc 5 µgmmAmikacinDisc 30 µgmmGentamicinDisc 10 µgmm

Urinary agents

Sulfamethoxazole-trimethoprim — Enterobacterales except SerratiaDisc 23,75-1,25 µgmmSulfamethoxazole-trimethoprim — Serratia spp.Disc 23,75-1,25 µgmmNitrofurantoinDisc 100 µgmmOral fosfomycinDisc 200 µgmm

References

Breakpoints and resistance phenotypes are based on the official documents:

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