Issue 1, 2023

A microfluidic finger-actuated blood lysate preparation device enabled by rapid acoustofluidic mixing

Abstract

For many blood-based diagnostic tests, including prophylactic drug analysis and malaria assays, red blood cells must be lysed effectively prior to their use in an analytical workflow. We report on a finger-actuated blood lysate preparation device, which utilises a previously reported acoustofluidic micromixer module. The integrated device includes a range of innovations from a sample interface, to the integration of blisters on a laser engraved surface and a large volume (130 μL) one-stroke manual pump which could be useful in other low-cost microfluidic-based point-of-care devices. The adaptability of the acoustic mixer is demonstrated on highly viscous fluids, including whole blood, with up to 65% percent volume fraction of red blood cells. Used in conjunction with a lysis buffer, the micromixer unit is also shown to lyse a finger-prick (approximately 20 μL) blood sample in 30 seconds and benchmarked across ten donor samples. Finally, we demonstrate the ease of use of the fully integrated device. Cheap, modular, but reliable, finger-actuated microfluidic functions could open up opportunities for the development of diagnostics with minimal resources.

Graphical abstract: A microfluidic finger-actuated blood lysate preparation device enabled by rapid acoustofluidic mixing

Supplementary files

Article information

Article type
Communication
Submitted
17 oct. 2022
Accepted
24 nov. 2022
First published
30 nov. 2022
This article is Open Access
Creative Commons BY license

Lab Chip, 2023,23, 62-71

A microfluidic finger-actuated blood lysate preparation device enabled by rapid acoustofluidic mixing

M. E. Haque, A. J. Conde, W. N. MacPherson, S. R. Knight, R. M. Carter and M. Kersaudy-Kerhoas, Lab Chip, 2023, 23, 62 DOI: 10.1039/D2LC00968D

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