Abstract: A testing vessel 1 includes a flexible vessel body 10 having a bottom and a hollow shape; and a partition 11 axially extending in the vessel body 10 and dividing an analyte extract containable space 50 in the vessel body 10 into two or more compartments. The testing vessel 1 enables two or more items to be readily tested with two or more test pieces.

Abstract: A problem to be solved by the present invention is to provide a method of inhibiting nonspecific reaction unique to feces in an immunochromatographic detection method in which a fecal sample is developed in an insoluble membrane to detect an analyte in the sample. It was found that nonspecific reaction caused by a fecal sample can be inhibited to accurately detect an analyte in the fecal sample by using a compound having in the molecule two or more carboxy groups. Particularly, it was found that nonspecific reaction unable to be inhibited by conventional methods can be inhibited for fecal samples of infants by using the sample diluent containing a compound having in the molecule two or more carboxy groups for the present invention, and the present invention was thereby completed.

Abstract: A testing vessel 1 includes a flexible vessel body 10 having a bottom and a hollow shape; and a partition 11 axially extending in the vessel body 10 and dividing an analyte extract containable space 50 in the vessel body 10 into two or more compartments. The testing vessel 1 enables two or more items to be readily tested with two or more test pieces.

Abstract: A problem is to provide a method of inhibiting nonspecific reaction unique to feces in a detection method using immunochromatography developing a fecal sample in an insoluble membrane so as to detect an analyte in the sample, and an immunochromatographic test strip used therefor. The present invention provides a method of performing an immunochromatographic reaction in the presence of an anti-IgA antibody so as to detect an analyte in a fecal sample without being affected by nonspecific reaction, and an immunochromatographic test strip used therefor.

Abstract: The present invention provides a detection method using an immunochromatographic test strip that suppresses the occurrence of a so-called white bleaching phenomenon and that is accurate and excellent in sensitivity.