Current status and future perspectives of vertical flow assays

Area of Science:

• Biomedical Engineering
• Analytical Chemistry
• Point-of-Care Diagnostics

Background:

• Lateral flow assays (LFAs) face limitations in specificity and cross-reactivity.
• There is a need for rapid, sensitive, and multiplexed diagnostic tools for point-of-care applications.

Purpose of the Study:

• To review the progress and applications of Vertical Flow Assays (VFAs).
• To highlight VFA advantages over LFAs for multiplexed detection.
• To discuss future perspectives of VFA technology.

Main Methods:

• Review of current literature on Vertical Flow Assay technology.
• Analysis of VFA performance metrics including sensitivity, specificity, and detection limits.
• Examination of VFA applications in diverse fields.

Main Results:

• VFAs demonstrate improved accuracy, higher sensitivity, and lower detection limits compared to LFAs.
• VFAs enable simultaneous detection of multiple targets (multiplexing).
• Recent advances include smartphone integration and enhanced detection capabilities.

Conclusions:

• VFAs are efficient, cost-effective, and user-friendly diagnostic tools suitable for resource-limited settings.
• VFAs hold significant potential for advancing rapid and accessible diagnostics across clinical, agricultural, and food safety sectors.
• Continued innovation in VFA technology promises broader applications and improved diagnostic outcomes.