title: Quality control limits for the agar overlay disk diffusion antimicrobial susceptibility test.
abstract: Replicate control tests were performed with the agar overlay and Kirby-Bauer techniques, using two sources of Mueller-Hinton agar. Mean zones observed with the two methods differed by 1 to 3 mm. Despite the minor differences between methods, National Committee for Clinical Laboratory Standards quality control limits which were established for the Kirby-Bauer method could also be used for the agar overlay technique.
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology; D003470:Culture Media; D004058:Diffusion; D008826:Microbial Sensitivity Tests / Q000295:instrumentation / Q000592:standards*; D011786:Quality Control
chemical_list: D000900:Anti-Bacterial Agents; D003470:Culture Media