Large-volume centrifugal microfluidic device for blood plasma separation.

Area of Science:

• Biomedical Engineering
• Analytical Chemistry
• Microfluidics

Background:

• Microfluidic systems excel at handling microliter volumes, but clinical bioanalysis often requires processing milliliter-scale samples.
• Existing methods for large-volume sample preparation can be time-consuming and may not integrate seamlessly with downstream analyses.

Purpose of the Study:

• To develop and validate a large-volume centrifugal or compact disc-based device for blood plasma separation.
• To process 2 ml of undiluted blood samples efficiently.
• To enable integration with subsequent analytical and detection steps.

Main Methods:

• Development of a novel large-volume centrifugal microfluidic device.
• Validation of the device for processing 2 ml of undiluted blood.
• Comparison of plasma separation time and purity with commercial methods.

Main Results:

• The automated device successfully yielded high-purity plasma.
• Plasma separation was achieved in less than half the time of commercial plasma preparation tubes.
• The device demonstrated potential for integration with downstream analysis and detection steps.

Conclusions:

• A novel large-volume microfluidic device effectively addresses the challenge of processing milliliter-scale clinical samples.
• The developed system offers a faster and potentially more efficient alternative for blood plasma preparation.
• This work has implications for sample-driven microfluidics, enabling broader applications in clinical bioanalysis.