Self-Driven "Microfiltration" Enabled by Porous Superabsorbent Polymer (PSAP) Beads for Biofluid Specimen Processing...

Area of Science:

• Biomaterials Science
• Analytical Chemistry
• Point-of-Care Diagnostics

Background:

• Remote biofluid collection faces challenges due to refrigeration needs, risking analyte degradation and inaccurate test results.
• Maintaining sample integrity is crucial for reliable diagnostic outcomes, especially in resource-limited settings.

Purpose of the Study:

• To develop porous superabsorbent polymer (PSAP) beads for effective biofluid sample treatment.
• To enable self-driven microfiltration and room-temperature storage of biofluid specimens.

Main Methods:

• Development of porous superabsorbent polymer (PSAP) beads.
• Utilizing PSAP beads for self-driven microfiltration of biofluids.
• Assessing the separation of small analytes and large cellular components.

Main Results:

• PSAP beads successfully separated small analytical targets (glucose, catalase, bacteriophage) from large components (bacteria, blood cells).
• The treatment reduced sample volume, self-aliquoted samples, prevented microbial contamination, and separated plasma.
• Stabilized target species within beads allowed for long-term storage at room temperature.

Conclusions:

• PSAP beads offer a novel approach for biofluid sample collection and preservation.
• This technology can enhance the reliability of diagnostic testing in remote and underserved regions.
• Potential to revolutionize sample handling for medical diagnostics globally.