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Related Experiment Video

Updated: Dec 18, 2025

Microfluidics-based High-throughput Circulating Tumor Cell Sorting and Single-cell Sequencing Technology
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Fully-automatic blood-typing chip exploiting bubbles for quick dilution and detection.

Ken Yamamoto, Ryosuke Sakurai1, Masahiro Motosuke

  • 1Department of Mechanical Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo 125-8585, Japan.

Biomicrofluidics
|June 19, 2020
PubMed
Summary
This summary is machine-generated.

A new, fully-automatic blood-typing device uses microfluidics for rapid results. This compact lab-on-a-chip technology enhances blood transfusion safety by providing quick, sensitive blood group identification.

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Area of Science:

  • Biomedical Engineering
  • Microfluidics
  • Clinical Diagnostics

Background:

  • Accurate and rapid blood typing is critical for safe blood transfusions.
  • Current methods can be time-consuming and require specialized equipment.
  • A need exists for a portable, user-friendly blood typing solution.

Purpose of the Study:

  • To develop a compact, fully-automatic blood-typing test device.
  • To achieve high sensitivity in detecting red blood cell agglutination without optics.
  • To enable rapid blood typing and cross-matching for improved transfusion safety.

Main Methods:

  • Development of a lab-on-a-chip device for sequential whole-blood dilution, homogenization, and reaction.
  • Implementation of 50-μm-thick reaction chambers for enhanced agglutination contrast.
  • Utilizing bubble injection in microchannels for efficient dilution and homogenization.

Main Results:

  • The device provides fully-automatic blood typing, yielding results within 5 minutes.
  • High sensitivity is achieved, detecting weak reactions between red blood cells and reagents without optical detection.
  • The device requires minimal user operation, suitable for medical staff.

Conclusions:

  • The developed compact, automatic blood-typing device offers a rapid and sensitive method for blood group identification.
  • Its applicability to cross-matching tests suggests potential for safer and quicker blood transfusions, especially in emergency settings.
  • The device's ease of use and speed address critical needs in clinical diagnostics and transfusion medicine.