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Summary of clinical breakpoint values (given in µg/mL) for antibiotics directed against Gram-negative bacteria. CLSI breakpoints are in parentheses, if different from EUCAST.
| EUCAST (CLSI) | MEM | GEN | CAZ | |||
|---|---|---|---|---|---|---|
| Sample | S | R | S | R | S | R |
| Enterobacteriaceae (Escherichia, Klebsiella, Enterobacter) | <2(1) | >8 (4) | <2 (4) | >4 (16) | <1 (4)a | >4 (16) |
| Pseudomonas | <2 | >8 | <4 | >4 (16) | <8 | >8 (32) |
aBoth 2 µg/mL and 4 µg/mL concentrations were used.
