| 摘要 |
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 (12) and a development flow channel (2), the specimen application portion (12) is configured such that an application space (9) is enclosed by a space-forming member (8) made of a liquid impermeable material, and a reaction reagent (14) that contains a labeling-reagent is retained in a position facing the application space (9) of the space-forming member (8) in the specimen application portion (12) so that the reaction reagent can be dissolved into a liquid specimen applied to the application space (9). 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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