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Updated: Jun 25, 2025

Microfluidic Chip Fabrication and Method to Detect Influenza
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Microfluidic Chip Fabrication and Method to Detect Influenza

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An integrated microfluidic platform for nucleic acid testing.

Antao Sun1, Petra Vopařilová2, Xiaocheng Liu1

  • 1Ministry of Education Key Laboratory of Micro and Nano Systems for Aerospace; School of Mechanical Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, Shaanxi 710072 P. R. China.

Microsystems & Nanoengineering
|May 24, 2024
PubMed
Summary
This summary is machine-generated.

This study introduces a fast, affordable, and portable system for SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2) diagnostics. The integrated platform offers accurate results using either reverse transcription-quantitative polymerase chain reaction (RT-qPCR) or reverse transcription loop-mediated isothermal amplification (RT-LAMP).

Keywords:
ChemistryElectrical and electronic engineeringMicrofluidics

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Area of Science:

  • Biotechnology
  • Molecular Diagnostics
  • Infectious Disease Research

Background:

  • Accurate and rapid diagnostics are crucial for controlling infectious disease outbreaks like COVID-19.
  • Existing SARS-CoV-2 testing methods can be time-consuming, expensive, or require specialized laboratory infrastructure.
  • There is a need for accessible, point-of-care diagnostic solutions.

Purpose of the Study:

  • To develop and validate a low-cost, integrated sample-to-answer system for SARS-CoV-2 detection.
  • To offer a versatile platform adaptable to different diagnostic needs and reagent availability.
  • To provide rapid and reliable testing results comparable to established commercial assays.

Main Methods:

  • The system integrates nucleic acid extraction, purification, and amplification (RT-qPCR or RT-LAMP) in a single workflow.
  • Sample processing time, including RNA extraction and RT-LAMP, is approximately 28 minutes.
  • The platform's performance was evaluated against commercial RT-LAMP and RT-qPCR systems.

Main Results:

  • The developed system provides rapid diagnostic results within 28 minutes.
  • The assay cost is approximately $9.5 per test, offering a cost-effective alternative to commercial options.
  • The system demonstrated a potential limit of detection below 297 copies and comparable accuracy to commercial tests.

Conclusions:

  • The portable, low-cost system offers a rapid and versatile solution for SARS-CoV-2 diagnostics.
  • Its efficiency and portability make it suitable for resource-limited settings or locations lacking centralized laboratories.
  • The platform's adaptability to RT-qPCR or RT-LAMP enhances its utility in diverse diagnostic scenarios.