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Lateral Flow Assay: A Summary of Recent Progress for Improving Assay Performance
Kobra Omidfar1,2, Fatemeh Riahi1,2, Soheila Kashanian3,4
1Biosensor Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran 1458889694, Iran.
Biosensors
|September 27, 2023
Summary
Lateral flow assays (LFAs) are crucial paper-based diagnostic tools for rapid point-of-care testing. This study reviews strategies to enhance LFA sensitivity and specificity, crucial for accurate disease detection in diverse settings.
Area of Science:
- Biomedical Diagnostics
- Point-of-Care Testing
- Assay Development
Background:
- Lateral flow assays (LFAs) are vital paper-based point-of-care (POCT) diagnostic tools.
- They offer rapid, low-cost biomarker detection with minimal expertise, ideal for resource-limited settings and pandemics.
- Improving LFA sensitivity and specificity remains a key challenge.
Purpose of the Study:
- To present a comprehensive summary of strategies for enhancing LFA sensitivity and specificity.
- To provide an objective evaluation of various enhancement techniques.
- To discuss key findings and solutions for LFA limitations.
Main Methods:
- Review and objective evaluation of sensitivity and specificity enhancement strategies for LFAs.
- Analysis of assay improvement techniques, including assay optimization and signal amplification.
- Examination of target enrichment methods.
Main Results:
- Detailed discussion of techniques such as detection element immobilization, capillary flow rate adjustment, and label evolution.
- Exploration of sample extraction and enrichment methods.
- Identification of key findings that improve LFA performance.
Conclusions:
- Various strategies can significantly enhance LFA sensitivity and specificity.
- Optimizing assay parameters and employing enrichment techniques are critical for overcoming LFA limitations.
- Further development in LFA technology holds promise for improved global health diagnostics.
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