Patent ID: 7575915
Filing Date: 2009-08-18
Classification: G01N,Y10S

Abstract:
1. A biosensor comprising: a development layer for developing an inspection target solution as a specimen by making the inspection target solution permeate inwards, wherein said development layer includes a reagent immobilization part immobilized therein and a marker reagent holding part where a marker reagent which can be eluted by the development of the inspection target solution is held, wherein said biosensor measures a bonding amount of the marker reagent in said reagent immobilization part, thereby qualitatively or quantitatively measuring components to be measured in the inspection target solution, and wherein said biosensor further comprises: a space forming part which forms a cavity part, wherein said cavity part is a space into which the inspection target solution flows by a capillary phenomenon, wherein said space forming part is located only at a part upstream of said reagent immobilization part in a permeating direction of the inspection target solution, wherein an amount of inspection target solution which flows into said cavity part is regulated by a volume of said cavity part, and wherein, by permeating the inspection target solution of the amount regulated by the volume of said cavity part into said development layer, B/F separation of the marker reagent in said reagent immobilization part is implemented.