Immunoassay Reagent Immobilization for Higher RS Virus Sensitivity

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Solution Overview

Problem

Conventional immunoassay methods and reagents lack sufficient sensitivity, particularly in detecting RS virus, necessitating the development of a highly-sensitive immunoassay method and reagent.

Innovation Solution

The addition of disaccharides and sugar alcohols to a solution containing antigens, antibodies, or their binding fragments, enhances immobilization on carriers, thereby improving detection sensitivity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional immunoassay methods are used, then the assay can be performed with standard reagents, but detection sensitivity is insufficient

Engineering Contradiction:
Improvedetection sensitivityVSAvoiddetection reliability
Core Design Contradiction:
Measurement precisionVSReliability

Solution Approach 1:

The patent changes the chemical composition parameters of the immobilization solution by adding disaccharides (1-4% w/v) and sugar alcohols (0.5-4% w/v) to improve antigen/antibody immobilization efficiency on the carrier, thereby enhancing detection sensitivity by 1.5 times or more compared to conventional methods

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent uses a composite immobilization solution containing both disaccharide and sugar alcohol components working together to achieve synergistic improvement in immobilization efficiency and detection sensitivity, creating a more effective reagent system

Inventive Principle:
Principle #40Composite materials

Data Source

PatentUS12584908B2Immunoassay method and immunoassay apparatus
Publication Date: 2026.03.24 DENKA CO LTD

AI summary

Provided are a highly-sensitive antibody and a test reagent using the antibody.A method for detecting an analyte according to an immunoassay method, using a carrier on which an antigen, an antibody or an antigen-binding fragment thereof is immobilized, whereinthe analyte is detected with increasing detection sensitivity by using a carrier to which an antigen, an antibody or an antigen-binding fragment thereof was immobilized by adding disaccharide and sugar alcohol to a solution comprising an antigen, an antibody or an antigen-binding fragment thereof.