Arkray, Inc.

Kyoto Daiichi Kagaku Co., Ltd.

Atsuko Katayama

Takao Fukuoka

Satoshi Yonehara

Kenji Yamamoto

Masufumi Koike

Yoshihiko Higuchi

Akio Okubo

Yoshiyuki Tanaka

A test devicefor analyzing a specific component in a test solution with a reagent by allowing the solution introduced via a feed openingto react with the reagent maintained in a predetermined position in a capillary tubehaving the openingand an air outlet. The tube is provided with two hydrophilic regionsand a hydrophobic region. The regiontransfers the solution from the openingto the reagent. The regionis delimited to a predetermined area maintaining the reagent. The regionseparates the regionfrom the region. The reagent and the solution are applied in predetermined amounts to the region. A measuring device need not previously measure the solution. The device is useful as an analytical device for rapid and easy analysis, and can be produced in a less number of steps because the reagent can be fixed by merely applying it onto a predetermined position.

Test device for analysis of a liquid sample

A method of measuring an analyte, comprising a step of measuring a detectable substance by using a reaction system including a formation reaction of the detectable substance based on a chemical reaction of the analyte contained in a sample, wherein a layered inorganic compound is caused to exist in the reaction system including the formation reaction of the detectable substance, whereby high-sensitivity measurement is made possible, the detectable substance can be stabilized to improve accuracy of the measurement, a rate of a chemical reaction is increased to enable quick measurement, and high-sensitivity measurement is made possible even in a reaction system which forms an insoluble substance. Also, it can be provided an analytical testing piece for measuring an analyte, by measuring a detectable substance by using a reaction system including a formation reaction of the detectable substance based on a chemical reaction of the analyte contained in a sample, wherein the testing piece comprises at least one test portion having a detection portion for detecting the detectable substance and contains a layered inorganic compound at least in the test portion, whereby diffusion and elution of a dyestuff or the like is prevented, more sensitive and accurate simple, analysis is made possible, and easy handling is possible.

Method for measuring substance and testing piece

A method of measuring an analyte, comprising a step of measuring a detectable substance by using a reaction system including a formation reaction of the detectable substance based on a chemical reaction of the analyte contained in a sample, wherein a layered inorganic compound is caused to exist in the reaction system including the formation reaction of the detectable substance, whereby high-sensitivity measurement is made possible, the detectable substance can be stabilized to improve accuracy of the measurement, a rate of a chemical reaction is increased to enable quick measurement, and high-sensitivity measurement is made possible even in a reaction system which forms an insoluble substance. Also, it can be provided an analytical testing piece for measuring an analyte, by measuring a detectable substance by using a reaction system including a formation reaction of the detectable substance based on a chemical reaction of the analyte contained in a sample, wherein the testing piece comprises at least one test portion having a detection portion for detecting the detectable substance and contains a layered inorganic compound at least in the test portion, whereby diffusion and elution of a dyestuff or the like is prevented, more sensitive and accurate simple analysis is made possible, and easy handling is possible.

A test device for analyzing a specific component in a test solution with a reagent by allowing the solution introduced via a feed opening to react with the reagent maintained in a predetermined position in a capillary tube having the opening and an air outlet The tube is provided with two hydrophilic regions and a hydrophobic region The region transfers the solution from the opening to the reagent. The region is delimited to a predetermined area maintaining the reagent. The region separates the region from the region The reagent and the solution are applied in predetermined amounts to the region A measuring device need not previously measure the solution. The device is useful as an analytical device for rapid and easy analysis, and can be produced in a less number of steps because the reagent can be fixed by merely applying it onto a predetermined position.

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Kyoto, Japan

Atsuko Katayama