Lateral flow immunoassay for proteins

Area of Science:

• Biomedical Engineering
• Analytical Chemistry
• Clinical Diagnostics

Background:

• Protein biomarkers are crucial for disease diagnosis.
• Lateral flow immunoassays (LFIA) are increasingly important for in vitro diagnostics due to their cost-effectiveness and ease of use, particularly in point-of-care applications.
• Challenges persist in material selection and component integration for optimal signal detection in LFIAs.

Purpose of the Study:

• To review the principles and components of lateral flow immunoassays for protein biomarker detection.
• To examine the medical applications and commercial status of LFIAs.
• To highlight methodologies for developing advanced LFIAs to improve global healthcare.

Main Methods:

• Literature review of existing research on lateral flow immunoassay technology.
• Analysis of biomaterials, labeling methods, and device integration strategies.
• Examination of current medical applications and commercial landscape of LFIAs.

Main Results:

• LFIAs utilize specific binding interactions for protein biomarker detection.
• Key components include nitrocellulose membranes, sample pads, conjugate pads, and absorbent pads.
• Various labeling methods (e.g., gold nanoparticles, latex beads) enhance signal visibility.
• Significant progress has been made in materials science and assay development.

Conclusions:

• Lateral flow immunoassays are a vital tool for accessible disease diagnosis.
• Overcoming current challenges in material selection and integration will further enhance LFIA performance.
• Continued development of LFIAs holds significant promise for advancing global healthcare and diagnostics.