Test Strip with Calibration Areas for Environmental Correction
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Solution Overview
Problem
Current test strips for analyte detection often require visual comparison or manual insertion into meters, which can be inaccurate and inefficient, especially under varying lighting conditions and temperature, and lack the ability to detect different ranges of analyte values effectively.
Innovation Solution
The test strips incorporate a reaction area, a color calibration area, and a temperature calibration area, allowing for image capture and analysis using a computing device to determine analyte characteristics by correcting for lighting and temperature effects, and featuring multiple reaction areas to detect different ranges of analyte values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If visual comparison or manual meter insertion is used for analyte detection, then the method is simple and requires minimal equipment, but the accuracy is reduced and efficiency is lowered
Solution Approach 1:
The patent introduces a computing device as an intermediary between the test strip and the user. The computing device captures images of the reaction area, processes the color data, and automatically determines analyte concentration, eliminating the need for manual visual comparison while maintaining simplicity of use.
Solution Approach 2:
The patent replaces the manual mechanical process of visual comparison with an automated optical system. The computing device uses image capture and digital image processing to automatically analyze color changes in the reaction area, substituting human visual assessment with machine-based optical measurement.
2Adaptability or versatility
If a single reaction area is used on the test strip, then the device complexity is low, but the ability to detect different ranges of analyte values is limited
Solution Approach 1:
The patent divides the test strip into multiple reaction areas, each containing reagents with different characteristics for detecting specific analyte concentration ranges. This segmentation allows the single test strip to handle multiple detection scenarios without requiring multiple separate test strips.
Solution Approach 2:
Different reaction areas on the same test strip are designed with locally optimized reagent compositions and characteristics tailored to specific analyte ranges. Each region has specialized properties (different reagent concentrations, different reaction chemistries) suited for its intended detection purpose.
3Measurement precision
If environmental factors like lighting and temperature are not corrected, then the measurement process is faster and simpler, but the measurement precision deteriorates
Solution Approach 1:
The patent incorporates calibration areas that are processed simultaneously with the reaction areas to pre-establish environmental baseline data. By capturing and processing calibration and reaction images together, the system performs environmental correction as part of the standard measurement process rather than as a separate step.
Solution Approach 2:
The system uses calibration areas to continuously monitor environmental conditions (lighting, temperature) and applies real-time feedback correction to the analyte measurement. The processing algorithm compares reaction area data against calibration area data to automatically compensate for environmental variations.
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
This approach enables precise, automated, and rapid detection of analyte characteristics, improving accuracy and efficiency by correcting for environmental factors and allowing for the detection of various analyte ranges on a single test strip.
Implementation Method 1
an imaging device captures an image of the reaction area. The image includes one or more color parameters
Implementation Method 2
Reaction area 102 contains reagents that react with an analyte in a specimen sample, such as glucose in a blood sample. When the specimen sample reaches reaction area 102, reaction area 102 changes color according to a characteristic of the analyte
Data Source
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AI summary
A specimen test strip is provided to detect a characteristic of an analyte in a specimen sample. The specimen test strip includes a reaction area to receive the specimen sample and a color calibration area to determine a color, or a color and a color intensity, of the reaction area after receiving the specimen sample. The specimen test strip may further include a temperature indication area to correct a measurement of the characteristic of analyte.