Abstract: Provided is a method for measuring an anti-drug antibody that can be performed more simply and inexpensively than conventional methods. Provided is a double antigen bridging immunoassay using a capture nucleic acid and a tracer nucleic acid. By using the capture nucleic acid and the tracer nucleic acid in the double antigen bridging immunoassay, an anti-drug antibody can be measured simply and inexpensively. Furthermore, by using the tracer nucleic acid, it becomes possible to adopt a high sensitivity detection method utilizing a nucleic acid.

Abstract: A fluorometric apparatus capable of configuring to have a small size and operability requiring a simple and easy operation of centrifuging a specimen in a container a rotation center of which is detachably supported by a rotation axis (not shown), exciting the specimen by means of an N2 laser apparatus and an excitation light irradiator for guiding the laser light emitted from the N2 laser apparatus, and receiving fluorescence having two types of wavelengths emitted from antibodies labeled with fluorescent dyes in the specimen in a region separate from the region in which the excitation light is radiated by a predetermined angle by using a photomultiplier tube, obtaining a ratio of light intensity for each wavelength, comparing the obtained ratio with a standard value, and estimating a target protein concentration.

Abstract: A clinical examination disk according to the invention includes a disk body in a disk form, and at least one cell formed in the disk body, wherein the cell comprises a specimen reservoir formed in the disk body and having a specimen injecting port, a reaction tank formed in the disk body so as to position nearer to the outer circumference of the body than a position of the specimen reservoir, and holding a reagent which is reactive with the specimen and is beforehand gelatinized, a first narrow tube formed in the disk body, and communicating to the specimen reservoir and the reaction tank, and a second narrow tube formed in the disk body, and having one end connected to the reaction tank and the other end made open.

Abstract: A fluorometric apparatus capable of configuring to have a small size and operability requiring a simple and easy operation of centrifuging a specimen in a container a rotation center of which is detachably supported by a rotation axis (not shown), exciting the specimen by means of an N2 laser apparatus and an excitation light irradiator for guiding the laser light emitted from the N2 laser apparatus, and receiving fluorescence having two types of wavelengths emitted from antibodies labeled with fluorescent dyes in the specimen in a region separate from the region in which the excitation light is radiated by a predetermined angle by using a photomultiplier tube, obtaining a ratio of light intensity for each wavelength, comparing the obtained ratio with a standard value, and estimating a target protein concentration.