Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Phc Holdings Corporation

Junko Nakayama

Masaki Fujiwara

Shoji Miyazaki

Hiroyuki Tokunaga

Eriko Yamanishi

Takahiro Nakaminami

Shiro Nankai

Toshihiko Yoshioka

Motokazu Watanabe

Keiko Yugawa

Yoshifumi Takahara

Hideyuki Baba

Takaaki Fujii

Setsuko Yano

Fuminori Kutsuna

Yoshihiro Itoh

The present invention provides a method for accurately measuring a blood component despite uneven distribution of blood introduced into a capillary. The measurement method according to the present invention is characterized in that a plurality of electrode systems for measuring the hematocrit are provided in a capillary of a biosensor to measure the hematocrit at different positions in the capillary. By measuring the hematocrit at the plurality of positions in the capillary as described above, the hematocrit can be measured more accurately despite uneven distribution of blood introduced into the capillary.

Method for measuring amount of blood component in blood

In a biosensor for measuring a specific substance in a liquid sample, one or a combination of sugar alcohol, metallic salt, organic acid or organic acid salt which has at least one carboxyl group in a molecule, and organic acid or organic acid salt which has at least one carboxyl group and one amino group in a molecule, is included in a reagent layer provided on electrodes, thereby providing a highly-accurate biosensor which is excellent in stability and has high response (sensitivity, linearity) of the sensor to the substrate concentration.

Biosensor

The present invention provides a high-performance glucose sensor having excellent storage stability and an improved response characteristic. This sensor comprises: an electrically insulating base plate; an electrode system including at least a working electrode and a counter electrode formed on the base plate; and a reaction layer containing at least pyrrolo-quinoline quinone dependent glucose dehydrogenase, formed in contact with or in the vicinity of the electrode system, and the reaction layer contains at least one kind of additive selected from the group consisting of gluconic acid and salts thereof.

Glucose sensor

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Ehime, Japan

Junko Nakayama