Arkray, Inc.

Daiichi Pure Chemicals Co., Ltd.

Kyoto Daiichi Kagaku Co., Ltd.

Susumu Nishino

Hiroshi Tamura

Kenji Nagakawa

Masaaki Teramoto

Takehiro Yamaguchi

Koichi Hino

Tomomichi Tsujimoto

Yoshiyuki Kawase

Masahiro Fukuzawa

Satoru Mizutani

A lancet cartridge is provided with a skin contact section that is held in the interior of a lancet holder and that includes a second pricking opening. A first pricking opening is formed to a size such that a skin contact section can be accommodated therein. Upon pressing in the pricking direction, the skin contact section is accommodated in the first pricking opening, and the leading end section of a pricking member protrudes through the second pricking opening.

Lancet cartridge

The present invention provides a colorimetric method that can perform a simple and reliable analysis in a short time. The method includes transferring an electron from an analyte to a coloring reagent that produces color by reduction via a mediator by using an oxidoreductase; and performing qualitative or quantitative analysis of the analyte by measuring color produced in the coloring reagent. The enzyme reaction of this method is a single stage reaction, and the color production reaction occurs via the mediator. Therefore, the measurement can be performed in a short time. Since this reaction requires neither hydrogen peroxide nor oxygen, the measured values are highly reliable.

Colorimetric method and reagent used for the same

The present invention relates to a test piece having a simple structure, by which HDL cholesterol can be measured easily using a small amount of specimen. A reagent layer () is formed on a support (), and an enzyme reagent for measuring cholesterol, a first surfactant that makes a solubility of a high-density lipoprotein (HDL) higher than that of a lipoprotein other than the HDL, and a second surfactant that inhibits the lipoprotein other than the HDL from dissolving are contained in the reagent layer ().

Test piece for measuring high-density lipoprotein (HDL) cholesterol

The present invention provides a calorimetric method that can perform a simple and reliable analysis in a short time. The method includes transferring an electron from an analyte to a coloring reagent that produces color by reduction via a mediator by using an oxidoreductase; and performing qualitative or quantitative analysis of the analyte by measuring color produced in the coloring reagent. The enzyme reaction of this method is a single stage reaction, and the color production reaction occurs via the mediator. Therefore, the measurement can be performed in a short time. Since this reaction requires neither hydrogen peroxide nor oxygen, the measured values are highly reliable.

Test piece for assaying high density lipoprotein (HDL) cholesterol

A method for avoiding influence of hemoglobin, in which the influence is caused by the changes with time in the absorption wavelength of hemoglobin when light absorption of a color reaction of a sample is measured by a rate assay, wherein the method comprises measuring the light absorption at a wavelength of from 517 to 529 nm or from 580 to 592 nm.

Growing community of inventors

Kyoto, Japan

Susumu Nishino