Comparison [+/- 1 dilution between minimum inhibitory concentrations (MICs)] of fluconazole and flucytosine Etest MICs of 10 candidate quality control yeast isolates and 78 clinical isolates demonstrated good agreement (> or = 90%) with the reference method (National Committee for Clinical Laboratory Standards document M27-P). This study suggests that the Etest is a promising alternative method for antifungal susceptibility testing in the clinical laboratory, but that further evaluations are needed.