Abstract: The present invention relates to biochemistry, medicine, and molecular biology, in particular to analytical biochemistry and immunochemical assay, and is concerned with a biological microchip for multiple parallel detection and quantitative determination of different compounds. The biochip comprises an array of three-dimensional hydrogel elements which have a predetermined volume, formed on a support by the method of photo- or chemically induced polymerization, and containing biological molecules of the same or different nature (ligands). The invention provides a method for detecting compounds on the biological microchip, comprising identification thereof by mass spectrometry techniques directly on the hydrogel element of the microchip and a method for detecting immunoassay results, consisting in carrying an immuno-PCR and registering the results thereof on the same microchip. The invention also relates to a method of multiple parallel immunoassay of compounds on a biological microchip.

Abstract: The invention relates to analytical chemistry and to quantitative immunochemical analysis, in particular, to a method for immunochemical quantitative detection of various biological toxins by using biological microchips. A biological microchip comprises an ordered array of three-dimensional hydrogel cells on a solid support, which are produced by a method of photo- or chemically induced polymerization and contain immobilized antibodies to various bacterial, plant and animal biotoxins, or biotoxins. The use of microchips makes it possible to analyze a sample simultaneously for the presence of several biotoxins. The proposed method for detecting biotoxins can be used in medicine, in food industry, and in environmental protection.