Abstract: An embodiment includes a bioelectrode including a hydrogel film, a conductive film, and a protective film. The conductive film is formed on one surface of the hydrogel film, and the protective film is formed on the other surface of the hydrogel film. The hydrogel film is comprises a mixture of a first material and a second material and is compatible with a living body, the first material configured to cause a sol-gel change at a temperature within a predetermined range around a body temperature of the living body and being compatible with the living body, the second material configured to not cause a sol-gel change at the temperature and being compatible with the living body. The protective film is provided to suppress the infiltration of water into the hydrogel film. The protective film can be made of a waterproof material or a water-repellent material.

Abstract: An acquisition device acquires peak-like shape data measured by a measurement method capable of obtaining waveform data having a peak indicating a feature of a measurement object as a measurement result. An arithmetic device reconstructs the peak-like shape data by using a part of a plurality of bases obtained by performing the Karuhunen-Loeve transform on the peak-like shape data. The arithmetic device reconstructs the peak-like shape data by using a first base, a second base, a third base, and a fourth base obtained by performing the Karuhunen-Loeve transform on the peak-like shape data.

Abstract: In a flow channel in a measurement region, there are placed a first working electrode, a second working electrode, a third working electrode, a counter electrode, and a reference electrode. The first working electrode, the second working electrode, and the third working electrode are made of a metal such as gold and are formed on a first wall surface of the flow channel. The counter electrode is formed on a second wall surface of the flow channel that faces the first wall surface. The reference electrode is placed on the second wall surface, not in contact with the first working electrode, the second working electrode, and the third working electrode. Surface plasmon resonance measurement is performed at the first working electrode, the second working electrode, and the third working electrode.

Abstract: Particles of a sustained-release gel which is converted into a sol by reacting with a product produced by a reaction of biomolecules with an enzyme, are disposed on a measurement unit, and a measurement target biomolecule is brought into contact with the particles. Due to this contact, a product is produced according to a reaction of the biomolecule with the enzyme contained in the particles. According to the reaction with the produced product, the sustained-release is converted into a sol, and a plurality of contained detection molecules are released to the outside of the particles.

Abstract: In step S101, a specimen containing blood plasma and a coagulation activating agent are introduced into a flow channel, with the coagulation activating agent being positioned ahead, in a state in which portions arrayed in series in the extending direction of the flow channel flow in contact with each other. In step S102, in the process in which the coagulation activating agent, the contact region between the coagulation activating agent and the specimen, and the specimen pass through a measurement portion provided midway along the flow channel in the order named, the refractive indices of the coagulation activating agent and the contact region are measured in a time-series manner. In step S103, the blood coagulation ability of the specimen is measured by comparing the first refractive index value which is the refractive index of the coagulation activating agent with the second refractive index value which is the minimum refractive index of the contact region.

Abstract: A flow cell (2) includes a plate-shaped body 21 that is almost rectangular in a plan view, an introduction portion (22) that is made of a concave portion formed in the upper surface of the body (21), a channel (23) that is formed inside the body (21) and has one end connected to the lower end of the introduction portion (22), and a delivery portion (24) that is made of a concave portion formed in the body (21) and has the lower end connected to the other end of the channel (23). The introduction portion (22) is formed to cause the meniscus of a liquid introduced from an opening to apply, to the liquid, a positive pressure or a negative pressure whose absolute value is smaller than that of a negative pressure applied to the liquid introduced into the channel (23) by the meniscus of the liquid. The channel (23) is formed to cause the meniscus of the liquid introduced into the channel (23) to apply a negative pressure to the liquid.

Abstract: A flow cell (2) includes a plate-shaped body 21 that is almost rectangular in a plan view, an introduction portion (22) that is made of a concave portion formed in the upper surface of the body (21), a channel (23) that is formed inside the body (21) and has one end connected to the lower end of the introduction portion (22), and a delivery portion (24) that is made of a concave portion formed in the body (21) and has the lower end connected to the other end of the channel (23). The introduction portion (22) is formed to cause the meniscus of a liquid introduced from an opening to apply, to the liquid, a positive pressure or a negative pressure whose absolute value is smaller than that of a negative pressure applied to the liquid introduced into the channel (23) by the meniscus of the liquid. The channel (23) is formed to cause the meniscus of the liquid introduced into the channel (23) to apply a negative pressure to the liquid.

Abstract: In step S101, a specimen containing blood plasma and a coagulation activating agent are introduced into a flow channel, with the coagulation activating agent being positioned ahead, in a state in which portions arrayed in series in the extending direction of the flow channel flow in contact with each other. In step S102, in the process in which the coagulation activating agent, the contact region between the coagulation activating agent and the specimen, and the specimen pass through a measurement portion provided midway along the flow channel in the order named, the refractive indices of the coagulation activating agent and the contact region are measured in a time-series manner. In step S103, the blood coagulation ability of the specimen is measured by comparing the first refractive index value which is the refractive index of the coagulation activating agent with the second refractive index value which is the minimum refractive index of the contact region.