The MIC(50) and MIC(90) values of doripenem, determined by Etest, for 110 isolates of Burkholderia pseudomallei were 0.5 and 0.75 microg/ml, respectively. There were significant correlations between MICs determined by Etest and MICs determined by agar dilution, MICs determined by Etest and inhibition zone size, and MICs determined by agar dilution and inhibition zone size.