Three are discrepancies between the results of antimicrobial susceptibility testing of Helicobacter pylori using E-test compared to broth microdilution or disk diffusion: C.Y. Hachem, J.E. Clarridge, R. Reddy, R. Flamm, D.G. Evans, D.Y. Graham. VAMC and Baylor College of Medicine, Houston, TX and Abbott Labs, Abbott Park, IL