Patent ID: 7960136

Claim:
An antimicrobial susceptibility assay device, including: an assay dish further including at least one chamber and at least one wall; at least one growth medium carried by the assay dish; at least one sample location adjacent the growth medium in the assay dish; at least one interpretive indication positionable at a predetermined location with respect to said at least one sample location; at least one antimicrobial agent sample positionable at a sample location, the position of said sample being predetermined with respect to at least one interpretive indication when said sample is positioned at the sample location; at least one interfitting element, said at least one interfitting element configured to enable at least one of: a) more accurately positioning said at least one antimicrobial agent sample at said at least one sample location in contact with the growth medium; b) carrying said at least one interpretive indication positionable at a predetermined location with respect to said at least one sample location, relative location of the sample location and the location of the interpretive indication being facilitated by the interfitting element and the assay dish being configured to interfit so that the interfitting element can be positioned in a predetermined way with respect to the assay dish so that they cooperate to enable more accurate relative location of said at least one antimicrobial agent sample at said at least one sample location with respect to said at least one corresponding interpretive indication, said assay device, after incubation so as to make a zone of inhibition discernable, enabling the interpretative indication to be directly visually compared with the margin of a zone of inhibition of microbial organism growth on said medium to directly determine an assay result comprising indication of susceptibility of a microorganism under test to at least one antimicrobial agent under test.