Paper-based microfluidic point-of-care diagnostic devices

Area of Science:

• Microfluidics and Diagnostics
• Materials Science
• Analytical Chemistry

Background:

• Dipstick and lateral-flow assays have dominated rapid diagnostics for 30 years, valued for portability and ease of use.
• A key limitation of current rapid diagnostics is the lack of quantitative measurement capabilities.
• Paper-based microfluidics is emerging as a promising point-of-care technology with potential to overcome these limitations.

Purpose of the Study:

• To review the fabrication and functionalization of paper-based microfluidic devices.
• To explore the integration of detection techniques and quantitative readout methods.
• To identify challenges and future directions for commercialization and regulatory approval.

Main Methods:

• Review of fabrication techniques for paper-based microfluidic devices.
• Discussion of methods for functionalizing microfluidic components.
• Analysis of detection techniques and quantitative readout strategies using handheld devices and camera phones.

Main Results:

• Paper-based microfluidics enables multiplexable, quantitative analysis for healthcare, environmental, and food safety applications.
• The technology is characterized by low cost, light weight, and disposability.
• Quantitative readouts can be achieved using accessible technologies like camera phones.

Conclusions:

• Paper-based microfluidics presents a significant advancement over traditional rapid diagnostic formats, offering quantitative capabilities.
• Addressing challenges in scaling up, commercialization, and regulation is crucial for widespread adoption.
• Further development is needed to realize the full potential of paper-based microfluidics as a real-world product.