Definition for Diffusion Susceptibility Test
From Biology Forums Dictionary
A diffusion susceptibility test (Kirby-Bauer test) is a simple, inexpensive test widely used to reveal which drug is most effective against a particular pathogen. The procedure involves inoculating a Petri plate uniformly with a standardized amount of the pathogen in question and arranging on the plate disks soaked in the drugs to be tested. In general, the larger the zone of inhibition around a disk, the more effective the drug.