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. Author manuscript; available in PMC: 2015 Sep 1.
Published in final edited form as: Int J Tuberc Lung Dis. 2015 Mar;19(3):339–341. doi: 10.5588/ijtld.14.0814

Table 1.

Resistance classification, and concentrations tested for the three fluoroquinolones using the Agar Proportions Method on 7H10 media.

Drug Tested Concentrations
Tested		 Peak Drug Serum
Concentration		 Sensitive Intermediate
Resistance		 Resistant
OFLX (MIC μg/mL) 1.0, 2.0, 4.0, 6.0, 8.0,
10.0		 2-104 <2.0 2.0 ≥4.0
MOXI (MIC μg/mL) 0.125, 0.25, 0.5, 1.0,
4.0, 8.0		 4-911 <0.5 0.5,1.0 ≥4.0
CIP* (μg/mL) 1.0 or 2.0 - ≤1 or ≤2 NA >1 or >2

OFLX: ofloxacin, MOXI: moxifloxacin, CIP: ciprofloxacin.

*

Prior to 2001 isolates were tested at a critical concentration of 2.0μg/ml, from 2001 onwards the critical concentration was decreased to 1.0μg/ml.