Agglutination Assay Imaging System for Rapid Antibody Detection
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Solution Overview
Problem
Current hemagglutination assays are slow, subjective, and unreliable, often taking 12-24 hours and relying on visual inspection, which is not robust for making quantitative determinations, particularly in time-sensitive situations like viral outbreaks or emergency blood transfusions.
Innovation Solution
The development of improved methods and systems for agglutination assays that include rapid imaging techniques, pre-fixed erythrocytes, and neuraminidase treatment to reduce sample pre-treatment time, combined with image analysis for objective and quantitative measurement of agglutination reactions, allowing for the detection of antibodies and viral particles within less than one hour.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional visual inspection methods are used for hemagglutination assays, then the assay can be performed with simple equipment, but the measurement is subjective and unreliable
Solution Approach 1:
The patent replaces the mechanical/visual inspection system with an optical imaging system. Digital images of agglutination reactions are captured and analyzed computationally, substituting human visual judgment with automated image processing algorithms that objectively measure agglutination based on particle distribution patterns.
Solution Approach 2:
The patent creates a digital copy (image) of the agglutination reaction rather than directly observing the physical sample. This digital representation can be analyzed, stored, and compared without requiring direct visual inspection, enabling more precise and repeatable measurements.
2Productivity
If traditional pre-treatment protocols are used, then the sample preparation can be thorough, but the assay time becomes excessively long
Solution Approach 1:
The patent performs preliminary actions (erythrocyte fixation and neuraminidase treatment) before the actual agglutination assay. Erythrocytes are pre-fixed with glutaraldehyde to stabilize them, and samples are pre-treated with neuraminidase to remove sialic acid that could interfere with agglutination. These preliminary steps ensure reliable results while enabling faster subsequent processing.
Solution Approach 2:
The patent changes the chemical parameters of the system by introducing neuraminidase treatment to remove sialic acid from sample components. This parameter change (removing interfering substances) prevents false inhibition of agglutination and allows for faster, more reliable detection without requiring lengthy traditional pre-treatment protocols.
3Loss of time
If rapid detection methods are implemented, then the assay time is reduced, but the quantitative measurement capability may be compromised
Solution Approach 1:
The patent implements feedback through automated image analysis that quantifies agglutination based on the distribution pattern of erythrocytes in captured images. The system provides objective feedback by calculating metrics such as the ratio of particles in different zones or the degree of clustering, enabling rapid quantitative measurement without sacrificing accuracy.
Solution Approach 2:
The patent transitions from traditional one-dimensional or subjective visual assessment to two-dimensional spatial analysis of particle distribution in captured images. By analyzing the spatial arrangement of erythrocytes across the image plane, the system achieves rapid quantitative measurement that preserves measurement precision while reducing assay time.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
These methods significantly reduce the time and increase the accuracy of agglutination assays, enabling rapid detection and measurement of antibodies and viral particles, facilitating timely decision-making in critical situations.
Implementation Method 1
treating the biological sample with neuraminidase
Implementation Method 2
Hemagglutination, or haemagglutination, is a specific form of agglutination that involves red blood cells (RBCs). This phenomenon is used in the laboratory to determine blood type, the presence and/or quantity of virus in a blood sample
Data Source
AI summary
Methods, compositions, systems, and devices are provided for performing and analyzing agglutination assays. In one aspect, methods for image analysis of agglutination assays are provided. In another aspects, methods for performing agglutination assays are provided. In one aspect, the methods may be used for the detection of various molecules, including viruses or antibodies against a virus. In another aspect, the methods can be used to determine effective immunization of a subject.