Patent ID: 7632460

Claim:
A test kit for determining the presence of one or more analytes in a fluid sample, comprising: an assay device located within a housing, the housing comprising a displacing portion and an accommodating portion located on a face of the housing, the displacing portion located adjacent to the accommodating portion; and a reading device configured to read a result of an assay performed using the assay device, the reading device comprising: a cavity for receiving the assay device, the cavity comprising a first wall; and an actuating switch located on the first wall, the actuating switch comprising a displaceable portion and two non-displaceable portions, wherein: the displaceable portion and the non-displaceable portions of the actuating switch extend outwardly from the first wall, and when the displaceable portion is displaced toward the first wall, the displaceable portion initiates the reading of the assay device by the reading device; upon receipt of the assay device in an operating orientation in the cavity, the non-displaceable portions are accommodated by the accommodating portion of the housing, so that the displaceable portion is displaced toward the first wall by the displacing portion of the housing to a position that initiates the reading by the reading device; and upon receipt of the assay device in a non-operating orientation in the cavity, the non-displaceable portions are not accommodated by the accommodating portion of the housing, so that the displaceable portion is not displaced by the displacing portion of the housing to a position that initiates reading, thereby preventing initiation of the reading by the reading device; such that only upon correct receipt of the assay device in the cavity can the displaceable portion of the actuating switch be displaced to the reading initiation position.