Lateral Flow Cassette Quantification via Optical Calibration
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Solution Overview
Problem
Current lateral flow chromatographic immunoassay tests are limited to providing qualitative results, lacking the capability for quantitative analysis, which restricts their use in diagnosing and managing conditions at the point of care without centralized clinical testing facilities.
Innovation Solution
Development of a diagnostic test system that includes a lateral-flow chromatographic assay cassette and a compact, portable testing device with data collection and analysis capabilities, utilizing a capture ligand, reporter molecules, and calibration standards to generate a calibration curve for quantifying analytes in biological samples, and interfacing with handheld devices for data analysis and reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If lateral flow chromatographic immunoassay cassettes are used for point-of-care testing, then ease of use and rapid results are improved, but the capability for quantitative analysis deteriorates (limited to qualitative results only)
Solution Approach 1:
The patent combines the simplicity of lateral flow chromatographic immunoassay cassettes with quantitative analysis capabilities by integrating optical detection systems and calibration curves directly into the point-of-care device, merging qualitative and quantitative functions in a single system
Solution Approach 2:
The patent introduces optical detectors and calibration standards as intermediary elements between the lateral flow cassette and the final quantitative result, enabling the translation of qualitative visual signals into precise quantitative measurements
2Measurement precision
If centralized clinical testing facilities are used, then quantitative analysis capability is improved, but device complexity and cost deteriorate (expensive equipment and technical personnel required)
Solution Approach 1:
The patent extracts the quantitative analysis capability from complex centralized laboratory equipment and transfers it to a simplified point-of-care device by using portable optical detectors and pre-calibrated cassettes, eliminating the need for expensive centralized equipment
Solution Approach 2:
The patent employs disposable lateral flow cassettes with integrated calibration standards and optical detection, replacing expensive reusable centralized equipment with affordable single-use units that provide equivalent quantitative analysis capability
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
Enables rapid, accurate, and affordable laboratory-quality testing at the point of care, providing quantitative results and eliminating the need for expensive centralized testing equipment and technical personnel, while supporting automated data reporting and decision-making.
Implementation Method 1
lateral-flow chromatographic immunoassay cassettes
Implementation Method 2
lateral-flow chromatographic immunoassay cassettes
Implementation Method 3
detection and determination of an analyte substance that is a member of a specific binding pair consisting of a ligand and a receptor
Implementation Method 4
Immunological assays involving reactions between antibodies and antigens
Data Source
AI summary
Assay cassettes and testing devices that can be used to provide rapid, accurate, affordable, laboratory-quality testing at the point of care. Such assay cassettes and testing devices are designed to provide rapid, quantitative test results in a point-of-care setting or the like. Likewise, such assay cassettes and testing devices may eliminate or replace expensive, centralized clinical testing equipment and technical personnel. Such testing device may include automated data reporting and decision support. Methods for performing point of care diagnostic tests are also disclosed.