| abstract |
A detecting element for detecting a plurality of different substances in a specimen, characterized by including: a channel provided on a substrate, which is capable of forming a plurality of layers of flow of a fluid; and a plurality of different substance trapping portions provided in the channel, for trapping the plurality of different substances in the specimen, respectively, in which: the plurality of different substance trapping portions are provided separately in accordance with the plurality of layers of flow of a fluid to be formed; and the plurality of different substance trapping portions are each arranged to acquire independent information on each of the substances in the specimen through an action between the fluid and the trapped substance. |