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A Microfluidic-based Electrochemical Biochip for Label-free DNA Hybridization Analysis
Published on: September 10, 2014
Magnetically-actuated blood filter unit attachable to pre-made biochips
Kwang Hyo Chung1, Yo Han Choi, Jong-Heon Yang
1Biosensor Team, Electronics and Telecommunications Research Institute, 218 Gajeong-no, Yuseong-gu, Daejeon, 305-700, Republic of Korea. hyo@etri.re.kr
Lab on a Chip
|July 27, 2012
Summary
We developed a novel magnetic blood filter that efficiently separates plasma from whole blood. This simple, fast device offers high performance for lab-on-a-chip blood testing applications.
Area of Science:
- Biomedical Engineering
- Materials Science
Background:
- Accurate blood plasma separation is crucial for various diagnostic tests.
- Existing methods can be complex, time-consuming, or require large sample volumes.
Purpose of the Study:
- To introduce a novel magnetic actuation-based blood filter unit.
- To demonstrate its efficiency in separating blood plasma from whole blood.
Main Methods:
- A non-diluted blood sample is introduced into the filter unit.
- Magnetic attraction is applied to selectively extract blood plasma.
- Stacked membranes filter out blood particles.
Main Results:
- Achieved nearly perfect filtering efficiency (∼99.999%).
- Obtained high plasma recovery (∼30%) with low blood consumption (<50 μl).
- Demonstrated fast operation, completing the process in approximately 1 minute.
Conclusions:
- The magnetic blood filter offers a simple, efficient, and rapid method for plasma separation.
- Its compatibility with biochips indicates significant potential for lab-on-a-chip diagnostic applications.
