Abstract: A component measurement system includes an elongated test strip with a thin plate shape having a flow path for accommodating a liquid, and a component measurement device configured to accommodate the test strip and to detect a component in the liquid. The component measurement device includes a gripping mechanism that grips the test strip while biasing the test strip from a width direction.

Abstract: Provided is a means capable of measuring an analyte concentration with high accuracy without requiring fractionation of a biological component. The present invention relates to a method for measuring an analyte concentration in a specimen, including (1) preparing the specimen, (2) mixing a coloring reagent, an oxidoreductase, and a light-scattering adjustment reagent with the specimen to obtain an analysis sample having substantially the same scattered light as the specimen, and (3) measuring the analyte concentration by using the analysis sample.

Abstract: A blood glucose level measuring chip exhibits excellent blood spreading ability and can maintain a reaction rate of blood with a reagent, even where the blood has a high hematocrit value (Ht). The blood glucose level measuring chip includes a blood glucose level measuring reagent including a supply port through which blood is supplied, a flow path having the supply port formed at one end of the flow path, and a blood glucose level measuring reagent containing an aromatic hydrocarbon having at least one sulfonic acid group disposed on an inner wall defining the flow path, wherein a ratio A/B is 3.7 mmol/L or more to 184.8 mmol/L when A (mmol) represents the total molar amount of aromatic hydrocarbons contained in the blood glucose level measuring reagent, and B (L) represents a volume of a region in which the blood glucose level measuring reagent and the blood are dissolved.

Abstract: A composition for detecting an analyte in a blood sample includes: a coloring reagent; an oxidoreductase; and a refractive index adjuster.

Abstract: A test strip (12) includes a flow path (26) formed in a main body portion (20); a reagent portion (22b) provided in the flow path (26); and an intake portion (24) which is provided at a starting end of the flow path (26) and through which a sample is introduced into the flow path (26). The main body portion (20) is provided with a buffer space (28) communicating with a terminal end of the flow path (26), and a vent hole (30) opened at an outer surface of the main body portion (20) and communicating with the buffer space (28), and in a region where the buffer space (28) and the flow path (26) are connected, a cross-sectional area (Sb) of the buffer space (28) is larger than a cross-sectional area (S) of the flow path (26).

Abstract: A blood glucose measurement reagent includes glucose dehydrogenase; a chromogenic indicator; and an aromatic hydrocarbon having at least one sulfonic acid group.

Abstract: A method for detecting an analyte in a blood sample includes dissolving a refractive index adjuster in the blood sample to obtain an analysis sample in which a difference in refractive index between a red blood cell and an extra-red blood cell fluid is reduced and detecting the analyte using the analysis sample.

Abstract: A component measurement system (10) includes a test strip (12) that includes a main body portion (20) for holding a sample, and a component measurement device (14) to which the test strip (12) is attached and that optically measures a component contained in the sample. The component measurement device (14) emits measurement light traveling in a thickness direction of the main body portion (20). The main body portion (20) includes a light shielding portion (32) that shields the measurement light, and the light shielding portion (32) includes a measurement opening (34) through which a measurement position (44) of the measurement light is formed on a reaction product of the sample that reacts with a reagent.

Abstract: A blood glucose measurement reagent includes glucose dehydrogenase; a chromogenic indicator; and an aromatic hydrocarbon having at least one sulfonic acid group.

Abstract: A composition for detecting an analyte in a blood sample includes: a coloring reagent; an oxidoreductase; and a refractive index adjuster.

Abstract: Provided is a means capable of measuring an analyte concentration with high accuracy without requiring fractionation of a biological component. The present invention relates to a method for measuring an analyte concentration in a specimen, including (1) preparing the specimen, (2) mixing a coloring reagent, an oxidoreductase, and a light-scattering adjustment reagent with the specimen to obtain an analysis sample having substantially the same scattered light as the specimen, and (3) measuring the analyte concentration by using the analysis sample.

Abstract: A component measurement system includes: a measurement tip configured to collect a liquid; and a measurement device configured to measure a component of the liquid by emitting measurement light to the measurement tip. The measurement tip includes: a tip body internally having a detection target region configured to be irradiated with the measurement light, and a printed layer disposed on a surface of the tip body and indicating information relating to a spatial clearance, which is an interval of the detection space along a traveling direction of the measurement light in the detection target region. The measurement device includes: a reading unit configured to read the information relating to the spatial clearance from the printed layer, and a control unit configured to calculate the component of the liquid by using the spatial clearance read by the reading unit.

Abstract: A blood glucose measurement reagent includes glucose dehydrogenase; a chromogenic indicator; and an aromatic hydrocarbon having at least one sulfonic acid group.

Abstract: A blood glucose measurement reagent includes: an enzyme having glucose as a substrate; a mediator; a chromogenic indicator; and an aromatic hydrocarbon having at least one sulfonic acid group. A sensor chip includes: a supply port through which blood is suppliable; a flow path having the supply port formed at one end thereof; and a reagent located in the flow path, the reagent being the blood glucose measurement reagent; wherein the sensor chip is mountable on a blood glucose meter for measuring blood glucose in the blood.

Abstract: A blood glucose level measuring chip exhibits excellent blood spreading ability and can maintain a reaction rate of blood with a reagent, even where the blood has a high hematocrit value (Ht). The blood glucose level measuring chip includes a blood glucose level measuring reagent including a supply port through which blood is supplied, a flow path having the supply port formed at one end of the flow path, and a blood glucose level measuring reagent containing an aromatic hydrocarbon having at least one sulfonic acid group disposed on an inner wall defining the flow path, wherein a ratio A/B is 3.7 mmol/L or more to 184.8 mmol/L when A (mmol) represents the total molar amount of aromatic hydrocarbons contained in the blood glucose level measuring reagent, and B (L) represents a volume of a region in which the blood glucose level measuring reagent and the blood are dissolved.

Abstract: Provided is a component measuring apparatus configured to determine a functional form that describes wavelength characteristics of a variation attributable to scattering (S (?)). The apparatus then determines unknown one or more coefficients (p, q) based on a first relational expression that involves a variation attributable to absorption (H (?1)) and a group of second relational expressions that do not involve variations attributable to absorption (H (?2a), H (?2b), H (?2c)). The apparatus then corrects an absorbance measured at an arbitrary wavelength (?) using a function where the one or more coefficients (p, q) are applied to the functional form so as to reduce or eliminate at least the effects of scattering of light.

Abstract: A method for detecting an analyte in a blood sample includes: a step (1) comprising preparing the blood sample; a step (2) comprising dissolving a refractive index adjuster in the blood sample to obtain an analysis sample in which a difference in refractive index between a red blood cell and an extra-red blood cell fluid is reduced; and a step (3) comprising detecting the analyte using the analysis sample.

Abstract: Provided is a component measuring apparatus configured to determine a functional form that describes wavelength characteristics of a variation attributable to scattering (S (?)). The apparatus then determines unknown one or more coefficients (p, q) based on a first relational expression that involves a variation attributable to absorption (H (?1)) and a group of second relational expressions that do not involve variations attributable to absorption (H (?2a), H (?2b), H (?2c)). The apparatus then corrects an absorbance measured at an arbitrary wavelength (?) using a function where the one or more coefficients (p, q) are applied to the functional form so as to reduce or eliminate at least the effects of scattering of light.