APPARATUS, METHOD, AND PROGRAM FOR COMPONENT MEASUREMENT

摘要

Provided is a component measuring apparatus configured to determine a functional form that describes wavelength characteristics of a variation attributable to scattering (S (λ)). 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 (λ1)) and a group of second relational expressions that do not involve variations attributable to absorption (H (λ2a), H (λ2b), H (λ2c)). The apparatus then corrects an absorbance measured at an arbitrary wavelength (λ) 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.

主权项

1. A component measuring apparatus for measuring an analyte in a bodily fluid based on optical characteristics of a dye component contained in the bodily fluid before or after color reaction, comprising:
an absorbance acquisition section for acquiring a first observed value representing an absorbance (A) at a specific wavelength (λ1) in a first wavelength region (R1) in which a component other than the dye component has a relatively high light absorptivity and a group of second observed values representing absorbances (A's) at one or more wavelengths (λ2a to λ2c) in a second wavelength region (R2) in which the light absorptivity is relatively low; a functional-form determination section for determining a functional form which describes wavelength characteristics of a variation attributable to scattering (S) that indicates an absorbance variation attributable to scattering of light in the bodily fluid, and is specified by one or more coefficients (p, q); a coefficient calculation section for determining the unknown one or more coefficients (p, q) based on a first relational expression for the first observed value, involving a variation attributable to absorption (H) that indicates an absorbance variation attributable to absorption of light in the bodily fluid, and a group of second relational expressions for the second observed values, not involving the variation attributable to absorption (H); and an absorbance correction section for correcting an absorbance measured at an arbitrary wavelength using a function where the one or more coefficients (p, q) determined by the coefficient calculation section are applied to the functional form determined by the functional-form determination section so as to reduce or eliminate at least the effects of the light scattering.