Abstract: 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.

Abstract: 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.

Abstract: A measuring device (1) is provided, comprising a measurement section (5) for measuring a specific constituent in a biological sample, an input accepting section (2) for accepting an input of an estimated value of subject's, measurement result, a coincidence degree determining section (61) for referencing data of an estimated value whose input is accepted at the input accepting section (2), and determining a degree of coincidence of a measured value obtained at the measurement section and the estimated value, and output sections (3, 4) for outputting a determined result obtained at the coincidence degree determining section (61).

Abstract: 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.

Abstract: 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 (2) is formed on a support (1), 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 (2).

Abstract: 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.

Abstract: The present invention provides a method for analyzing protein using a Biuret reaction, which can prevent coagulation of protein and an increase of a viscosity of a reaction liquid caused thereby, even when using a sample including protein with a high concentration. A sample including protein is adjusted to be alkaline by adding a sodium hydroxide solution or the like, to which a divalent copper salt and a salt containing a chaotropic ion are added so as to cause a Biuret reaction, and a degree of coloring thereof is measured, thereby analyzing the protein. The chaotropic ion may be, for example, a SCN ion, an I ion, a NO3 ion, a ClO4 ion, a Br ion or a Cl ion.

Abstract: 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 (2) is formed on a support (1), 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 (2).

Abstract: 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 (2) is formed on a support (1), 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 (2).

Abstract: The present invention provides a colorimetric method that can perform a simple and reliable analysis in a short time. An aqueous solution including a bipyridyl copper complex and glucose dehydrogenase is prepared. A filter paper is impregnated with the aqueous solution and dried. When a sample such as blood is applied to the filter paper, the bipyridyl copper complex produces reddish brown color in accordance with the glucose concentration, and the color produced in the complex is measured. This reaction is a single reaction and thus occurs in a short time (e.g., 5 seconds or less). Since this reaction requires neither hydrogen peroxide nor oxygen, the measured values are highly reliable.

Abstract: 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.

Abstract: A test piece having a simple structure by which HDL cholesterol can be easily assayed by using a small amount of a specimen. A reagent layer (2) is formed on a support (1). This reagent layer (2) contains an enzyme reagent for assaying cholesterol, a first surfactant capable of highly solubilizing HDL (high density lipoprotein) compared with lipoproteins other than HDL, and a second surfactant inhibiting the dissolution of lipoproteins other than HDL.

Abstract: 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.