ASSAY DETERMINATION DEVICE AND ASSAY DETERMINATION METHOD

摘要

Provided is a technology whereby determination in an appropriate detection region is made possible in automatic determination of an immunochromatographic assay. An immunochromatographic assay determination device in which a liquid sample that potentially includes a substance to be detected spreads into a detection region for the substance to be detected via a labeled-substance-containing region of a test strip, and a determination of negative or positive is made from the coloration state of the detection region for the substance to be detected, wherein an observation unit acquires coloration index data as an index relating to the coloration state for a range including the position of at least a portion of a sample spreading detection region for indicating, by the coloration state thereof, that a liquid sample has reached the sample spreading detection region, the sample spreading detection region being downstream in the spreading direction from the detection region for the substance to be detected in the test strip, and a processing unit specifies the sample spreading detection region from the coloration index data, specifies the detection region for the substance to be detected in a position a predetermined inter-region distance upstream from the sample spreading detection region in the data of the coloration index data, and makes a determination of negative or positive on the basis of the coloration state of the detection region for the substance to be detected.