TABLE 2.

Equivalencies between MICs obtained by the CLSI M27-A2 and EUCAST E.Dis 7.1 AFST methods

MIC (mg/liter) by CLSI M27-A2	MIC (mg/liter) after using equivalence equationa	Conversion to closest EUCAST AFST MIC (mg/liter)
0.015	0.019	0.015
0.03	0.035	0.03
0.06	0.065	0.06
0.12	0.126	0.12
0.25	0.235	0.25
0.5	0.39	0.5
1	0.821	1
2	1.535	2
4	2.870	2
8	5.367	4
16	10.035	8
32	18.765	16
64	35.090	32
128	65.617	64
256	122.701	128

^alog₂ EUCAST MIC = 0.903 × log₂ CLSI AFST MIC − 0.285.