System for solid phase analysis of biological samples with immunochemical methodology, in order to allow in vitro diagnosis of allergies and autoimmune diseases, comprising: - a plurality of reaction chambers lined and adjacent between them, each reaction chamber being U-shaped and comprising a first vertical branches, a second vertical branches and a transverse duct which connects the lower ends of the two branches and together, putting them in fluid communication; - first feeding means suitable to feed a liquid to be analyzed to the reaction chamber for reacting said liquid with the substances contained in a solid coating, in order to generate immune complexes; - a washing unit of said reaction chamber, able to eliminate the analyte under examination and / or additional reagents fed to the reaction chamber; - second feeding means suitable to feed an additional immuno-enzymatic reagent; - third feeding means suitable to feed a detection reagent which determines an optically and detectable modification of the immuno-enzymatic reagent in the reaction chamber; at least one photometric sensor that reads the intensities of optical modifications of the immuno-enzymatic reagent during the reaction with the detector reagent; - at least one processing unit configured to determine by interpolation with a reference curve, the quantitative numerical values of the allergens and / or antibodies present in the reaction chamber from photometric data; - a control unit configured to execute a software program in which are coded instructions for controlling said feeding means and said processing units. Characterized in that: - said at least a reaction chamber comprises an element having at least one of its walls covered with a solid coating in which one or more different substances are contained, and in that said liquid, feed to the reaction chamber, reacts with the substances contained in the solid coating, in order to generate immune complexes; and wherein - a removable cap for closing the ducts is provided, the cap being made of opaque material having a color univocally related to a specific substances group which can be linked to the solid phase applied or expected in one of the branches of the U-shaped duct, and - the said substance groups being the substances contained in the solid phase and, therefore, the analytes that the reaction in each chamber should detect - sensors that allow the reading of the colors of the cap is provided for carrying out automatic editing of test results by automatically recognizing the color of the caps associated with the reaction devices. - a plurality of reaction chambers lined and adjacent between them, each reaction chamber being U-shaped and comprising a first vertical branches, a second vertical branches and a transverse duct which connects the lower ends of the two branches and together, putting them in fluid communication; - first feeding means suitable to feed a liquid to be analyzed to the reaction chamber for reacting said liquid with the substances contained in a solid coating, in order to generate immune complexes; - a washing unit of said reaction chamber, able to eliminate the analyte under examination and / or additional reagents fed to the reaction chamber; - second feeding means suitable to feed an additional immuno-enzymatic reagent; - third feeding means suitable to feed a detection reagent which determines an optically and detectable modification of the immuno-enzymatic reagent in the reaction chamber; at least one photometric sensor that reads the intensities of optical modifications of the immuno-enzymatic reagent during the reaction with the detector reagent; - at least one processing unit configured to determine by interpolation with a reference curve, the quantitative numerical values of the allergens and / or antibodies present in the reaction chamber from photometric data; - a control unit configured to execute a software program in which are coded instructions for controlling said feeding means and said processing units. - said at least a reaction chamber comprises an element having at least one of its walls covered with a solid coating in which one or more different substances are contained, and in that said liquid, feed to the reaction chamber, reacts with the substances contained in the solid coating, in order to generate immune complexes; and wherein - a removable cap for closing the ducts is provided, the cap being made of opaque material having a color univocally related to a specific substances group which can be linked to the solid phase applied or expected in one of the branches of the U-shaped duct, and - the said substance groups being the substances contained in the solid phase and, therefore, the analytes that the reaction in each chamber should detect - sensors that allow the reading of the colors of the cap is provided for carrying out automatic editing of test results by automatically recognizing the color of the caps associated with the reaction devices.