Panasonic Corporation

Ryoko Kawamata

Mie Takahashi

An inexpensive biosensor is provided that can realize an electrochemical analysis and perform measurement with high accuracy or convenience. The biosensor is an immunological sensor that enables measurement anywhere at anytime by anyone while keeping convenience. The biosensor includes: an electrode sensor unitin which an electric conductive layeris provided on an electrode-unit forming substratehaving an insulating property and an electrode portionfor detecting an electrochemical signal is formed on the electrode-unit forming substrate; and a chromatographic sensor unitin which an extended layerincluding a porous film for extending a specimen solution is provided on an extended-portion forming substrate, wherein the electrode sensor unitand the chromatographic sensor unitare stacked with the extended-portion forming substrateinterposed between the electrode sensor unitand the chromatographic sensor unit

Biosensor

Provided is a biosensor with precision, high accuracy, and high sensitivity capable of increasing measurement accuracy while allowing measurements to be performed anywhere at any time by anyone, and allowing measurement with a small amount of specimen. In a biosensor including a specimen application portion () and a development flow channel (), the specimen application portion () is configured such that an application space () is enclosed by a space-forming member () made of a liquid impermeable material, and a reaction reagent () that contains a labeling-reagent is retained in a position facing the application space () of the space-forming member () in the specimen application portion () so that the reaction reagent can be dissolved into a liquid specimen applied to the application space (). Thus, it is possible to reduce the amount of specimen required for measurement, also completely dissolve the labeling-reagent and cause the labeling-reagent to react and develop with the entire liquid specimen, allowing measurement with high accuracy and high sensitivity.

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Ehime, Japan

Ryoko Kawamata