Biosensor, biosensor measuring apparatus and measurement method
First Claim
1. A measurement method for measuring a test substance in a sample using a biosensor in a sealed package, said biosensor comprising a substrate having a sample receiving section, a reagent section including a reagent;
- and a colorimetric moisture absorbing indicating material, the method of using the biosensor comprising the steps of;
removing said biosensor from said package;
determining a degree of degradation of said reagent on the basis of a degree of color change of said colorimetric moisture absorbing indicating material; and
measuring said test substance when the degree of degradation of said reagent is determined to be acceptable in the determining step and not measuring said test substance when the degree of degradation of said reagent is determined to be unacceptable.
7 Assignments
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Accused Products
Abstract
A biosensor and a biosensor measuring apparatus whose performance can be easily determined by an ordinary user are provided. A biosensor 100 includes a substrate 1 having a quality deciding section 13 and a sample receiving section 15 provided on the substrate 1 to which a sample is supplied. The quality deciding section 13 includes a moisture absorbing material changed in color through absorption of moisture. The sample receiving section 15 has a reagent section 7 including an enzyme reacted with a test substance as a substrate. The quality deciding section 13 includes a recess 17 formed in the substrate 1, the moisture absorbing material 16 disposed in the recess 17 and a film 18 with no air permeability substantially covering the opening of the recess 17 and closely adhered to the moisture absorbing material 16. Cobalt salt is used as the moisture absorbing material 16.
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Citations
10 Claims
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1. A measurement method for measuring a test substance in a sample using a biosensor in a sealed package, said biosensor comprising a substrate having a sample receiving section, a reagent section including a reagent;
- and a colorimetric moisture absorbing indicating material, the method of using the biosensor comprising the steps of;
removing said biosensor from said package; determining a degree of degradation of said reagent on the basis of a degree of color change of said colorimetric moisture absorbing indicating material; and measuring said test substance when the degree of degradation of said reagent is determined to be acceptable in the determining step and not measuring said test substance when the degree of degradation of said reagent is determined to be unacceptable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- and a colorimetric moisture absorbing indicating material, the method of using the biosensor comprising the steps of;
Specification