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Reagent storage and delivery on integrated microfluidic chips for point-of-care diagnostics

  • 0College of Engineering, Design and Physical Sciences, Brunel University London, Uxbridge, UB8 3PH, UK. manoochehr.rasekh@brunel.ac.uk.
Biomedical Microdevices +

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June 2, 2024

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June 2, 2024

View abstract on PubMed

Summary

This summary is machine-generated.

Microfluidic point-of-care diagnostics require efficient reagent storage and delivery. This review examines on-chip and off-chip methods, highlighting challenges and solutions for integrated microfluidic devices.

Area Of Science

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

Background

  • Microfluidic devices offer automated, miniaturized, and integrated solutions for rapid on-site biomarker detection.
  • Effective reagent storage and delivery are critical for multi-step microfluidic diagnostic processes, including sample preparation, nucleic acid extraction, amplification, and detection.

Purpose Of The Study

  • To review and discuss current methods for reagent storage and delivery in microfluidic point-of-care (POC) diagnostic systems.
  • To analyze the merits and limitations of both on-chip (self-contained) and off-chip (external) reagent storage solutions.
  • To provide guidelines for designing integrated microfluidic POC devices by considering microvalves and micropumps.

Main Methods

  • Literature review of existing reagent storage and delivery approaches for microfluidic devices.
  • Categorization of storage solutions into direct on-chip and external storage methods.
  • Analysis of microvalves and micropumps relevant to integrated microfluidic systems.

Main Results

  • A variety of approaches exist for reagent storage and delivery, but no universal solution is currently available.
  • Both on-chip and off-chip storage methods have distinct advantages and disadvantages that need careful consideration for specific applications.
  • The integration of microvalves and micropumps is crucial for controlling reagent flow and enabling complex sample preparation within microfluidic POC devices.

Conclusions

  • Developing effective reagent storage and delivery systems is essential for advancing microfluidic point-of-care diagnostics.
  • Future research should focus on optimizing existing methods and exploring novel strategies to overcome current limitations.
  • Careful design incorporating appropriate microfluidic components will facilitate the development of robust and versatile integrated POC diagnostic devices.

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