Polysaccharide Stabilized Dried Reagent Zone
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Solution Overview
Problem
Diagnostic assays face inaccuracies and biases due to phenotypic changes in reaction zones, leading to incomplete analyte capture and increased coefficient of variation, which decreases the accuracy and repeatability of diagnostic results.
Innovation Solution
Incorporating a hydrophilic polysaccharide into the antibody reaction zone to stabilize the mesa/nodes, reducing fracturing and phenotypic changes, thereby maintaining a glassy phenotype and enhancing the stability and accuracy of diagnostic assays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If the reaction zone is stored over time prior to use, then the shelf-life is extended, but phenotypic changes occur leading to decreased accuracy and repeatability
Solution Approach 1:
The patent applies preliminary action by pre-stabilizing the reaction zone with a specific formulation containing gelatin, sugar, and polysaccharide in defined proportions before storage. This preliminary stabilization prevents phenotypic changes during storage, allowing the reaction zone to maintain its analytical properties throughout the extended shelf-life period without requiring intervention during storage.
Solution Approach 2:
The patent changes the chemical composition parameters of the reaction zone by specifying precise proportions of gelatin (0.1-10% w/v), sugar (5-20% w/v), and polysaccharide (0.1-5% w/v). These parameter changes in the formulation create a stable matrix that resists phenotypic changes during storage, thereby maintaining reliability while extending shelf-life.
2Duration of action of stationary object
If the reaction zone structure changes due to storage, then the storage duration is extended, but the analyte capture completeness decreases
Solution Approach 1:
The patent uses a composite material formulation combining gelatin, sugar, and polysaccharide in specific ratios to create a reaction zone matrix that maintains structural integrity during storage. This composite structure prevents the phenotypic changes that would otherwise lead to incomplete analyte capture, thereby maintaining manufacturing precision over extended storage durations.
Solution Approach 2:
The reaction zone is pre-formulated with the stabilizing composite materials before storage, establishing a protective matrix that prevents structural degradation. This preliminary action ensures that the analyte capture completeness is maintained throughout the storage period without requiring reformation or adjustment.
3Duration of action of moving object
If the reaction zone is used repeatedly over time, then the usability period is extended, but the coefficient of variation increases
Solution Approach 1:
The patent modifies the formulation parameters by incorporating specific concentrations of gelatin, sugar, and polysaccharide that create a stable reaction environment. These parameter changes ensure consistent analytical performance across repeated uses, maintaining low coefficient of variation throughout the extended usability period.
Solution Approach 2:
The reaction zone is pre-stabilized with the protective formulation before being put into repeated use. This preliminary stabilization ensures that the measurement precision and low coefficient of variation are maintained across multiple uses and over the entire usability period without degradation.
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
The use of hydrophilic polysaccharides in the antibody reaction zone stabilizes the reagents, reducing bias and increasing the accuracy and repeatability of diagnostic assays by maintaining a glassy phenotype, thus extending the shelf-life and usability of reaction vessels.
Implementation Method 1
Incorporating a hydrophilic polysaccharide into the antibody reaction zone to stabilize the mesa/nodes, reducing fracturing and phenotypic changes, thereby maintaining a glassy phenotype
Data Source
AI summary
Non-limiting embodiments of a modified solid reagent zone comprising at least hydrophilic polysaccharide and/or at least one hydrophilic non-polysaccharide polymer for use in the conductance of at least one diagnostic assay, as well as kits and methods of use and production related thereto.