| 摘要 |
<p>The present invention relates to a homogeneous immunoassay system for the determination of an antibody or an antigen in a sample which consists of an interferometric signal from an optical source, a waveguide coated with an antibody or an antigen and having at least one region immersed in a solution containing a sample, whereby the corresponding antigen or antibody can be complexed on the waveguide, a detector adapted to measure the interferometric signal after its propagation through the waveguide, and a measuring device to take the Fourier transform of the interferometric signal for determining the degree of attenuation of the interferometric signal at a wavelength corresponding to an absorption characteristic of the antigen-antibody complex or of a label incorporated into the antigen-antibody complex, whereby determining the amount of antigen or antibody in the sample.</p> |
