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Table 1 Clinical and Laboratory Standards Institute Performance Standards for dilution antimicrobial susceptibility tests

From: Fluoroquinolone resistance of Staphylococcus epidermidis isolated from healthy conjunctiva and analysis of their mutations in quinolone-resistance determining region

Antimicrobial agent MIC (μg/mL) interpretive standard
Susceptible Intermediate Resistant
Ciprofloxacin ≤ 1 2 ≥ 4
Levofloxacin ≤ 1 2 ≥ 4
Moxifloxacin ≤ 0.5 1 ≥ 2
  1. MIC minimal inhibitory concentration