Capillarity-driven blood plasma separation on paper-based devices

Area of Science:

• Biomedical Engineering
• Microfluidics
• Point-of-Care Diagnostics

Background:

• Accurate blood plasma separation is crucial for various diagnostic tests.
• Existing methods often require complex instrumentation and expensive consumables, limiting their use in resource-limited settings.

Purpose of the Study:

• To develop a simple, cost-effective method for plasma separation from whole blood.
• To demonstrate the feasibility of using paper-based H-channels for this purpose.

Main Methods:

• Capillarity-driven flow was utilized for plasma separation.
• Simple paper-based H-channels were fabricated and tested.
• Whole blood samples were used to evaluate the separation efficiency.

Main Results:

• Successful plasma separation from whole blood was achieved using the paper-based H-channels.
• The method demonstrated efficient separation without the need for external power sources or complex equipment.
• The technique proved to be cost-effective due to the use of inexpensive materials.

Conclusions:

• Capillarity-driven plasma separation on paper-based H-channels offers a promising approach for portable diagnostic devices.
• This methodology is well-suited for resource-limited environments due to its simplicity and low cost.
• Further development could lead to widespread implementation in point-of-care diagnostics.