Comparative teicoplanin in vitro susceptibility data were generated for 1201 Gram-positive US clinical trial isolates using standardized broth microdilution and disk diffusion techniques. Based on the results of this study, the following interpretive criteria for teicoplanin are recommended: for MIC tests, less than or equal to 8 micrograms/ml = susceptible, 16 micrograms/ml = moderately susceptible, and greater than or equal to 32 micrograms/ml = resistant; and for disk (30 micrograms) tests, greater than or equal to 14 mm = susceptible, 11-13 mm = intermediate, and less than or equal to 10 mm = resistant.
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