Assay Calibration Model With Variable Hill Slope Accuracy

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Solution Overview

Problem

Existing assay systems face challenges in generating accurate quantitative sample assay results due to inadequate calibration methods, leading to inconsistencies in signal measurement and analyte quantification.

Innovation Solution

Employing a modified four-parameter logistic regression fit equation to calibrate assay systems, where the Hill's slope is dependent on the quantity value, and identifying fitting parameters to generate a calibration model that accurately relates defined quantities to assay signal values.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional calibration methods are used, then the assay system is simple to operate, but the accuracy of sample quantity determination deteriorates

Engineering Contradiction:
Improveaccuracy of sample quantity determinationVSAvoidcalibration model complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by using a modified four-parameter logistic regression equation where the Hill's slope is made variable instead of constant. The calibration model incorporates quantity-dependent Hill's slope values that are derived from calibration data, allowing the system to adapt the slope parameter dynamically based on the analyte quantity being measured. This improves measurement precision by better fitting the assay response curve while maintaining operational simplicity through automated parameter calculation.

Inventive Principle:
Principle #35Parameter changes

2Measurement precision

If a modified four-parameter logistic regression fit equation with quantity-dependent Hill's slope is used, then the accuracy of sample quantity determination is improved, but the complexity of the calibration model increases

Engineering Contradiction:
Improveaccuracy of sample quantity determinationVSAvoidcalibration model complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The calibration model performs self-service by automatically calculating the quantity-dependent Hill's slope values during the calibration process. The system uses the calibration data points to compute the appropriate slope values for different quantity ranges without requiring manual intervention or complex external calculations. This automated approach improves accuracy while managing model complexity through internal self-calculation rather than external complexity.

Inventive Principle:
Principle #25Self-service

3Reliability

If conventional calibration models are used, then the calibration process is simple, but the reliability of assay results deteriorates

Engineering Contradiction:
Improvereliability of assay resultsVSAvoidcalibration process complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements feedback by using the calibration data to dynamically adjust the Hill's slope parameter in the logistic regression equation. The system continuously refines the calibration model based on the actual calibration sample measurements, creating a feedback loop where the calibration results directly inform the parameters used for subsequent sample measurements. This feedback mechanism improves reliability by ensuring the calibration model accurately reflects the specific assay conditions, while the automated nature of the process manages complexity.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS12546768B2Assay system calibration systems and methods
Publication Date: 2026.02.10 MESO SCALE TECH LLC
  • US12546768B2 patent drawing
  • US12546768B2 patent drawing
  • US12546768B2 patent drawing

AI summary

Systems and methods for calibrating sample assays are provided. Systems may include assay devices and components for carrying out calibration and sample assays. Systems may further include processing components and storage units configured for receiving calibration information, determining calibration models and parameters, and applying calibration parameters to sample data. Systems may further include components for operating in a networked environment. Methods may include techniques and processes for carrying out calibration and sample assays, determining calibration models and parameters, and applying calibration parameters to sample data.