Abstract: According to an embodiment of the present disclosure, a medium with which blood plasma is separated and stored, the medium including a porous medium for separation of blood plasma and a substance supported on the porous medium, the substance that suppresses glycation of a protein by glucose, is provided.

Abstract: There is provided a method for measuring an antigen, comprising: providing a solution containing an antigen; providing a first antibody that specifically recognizes the antigen and is bound to a magnetic carrier; providing a second antibody that specifically recognizes the antigen and is modified with an oxidase; providing (a substrate liquid including) a substrate which reacts with the oxidase; allowing the first antibody to recognize the antigen; allowing the second antibody to recognize the antigen; using a magnetic field to capture an antigen-antibody complex of the antigen recognized by the first antibody and the second antibody in the magnetic field; washing the antigen-antibody complex while it is captured in the magnetic field; reacting the substrate with the antigen-antibody complex to produce hydrogen peroxide; and measuring the hydrogen peroxide.

Abstract: Provided is a glycated protein sensor provided with: immobilized protease; immobilized ketoamine oxidase; and a hydrogen peroxide detection section.

Abstract: A sensor chip (30), to be brought close to an organism to collect a body fluid in order to chemically measure the body fluid, is configured such that a surface (100) to be brought close to the organism is curved.