Thread- paper, and fabric enzyme-linked immunosorbent assays (ELISA)
2018
Abstract Enzyme-linked immunosorbent assay (ELISA) is an immunological assay commonly used to measure antibodies, antigens, proteins, and glycoproteins in biological samples. While the procedure is routine and straightforward, there are a number of variables (reagent selection, volume measurement, temperature, and time) that if not carefully considered, can affect the test outcome. Herein, we describe the development of microfluidic thread/paper-based analytical devices (µTPAD), microfluidic fabric-based analytical devices (µFAD), and microfluidic thread-based analytical devices (µTAD) as new platforms for ELISA. The quantitative detection of biotinylated goat anti-mouse IgG (system one) and rabbit IgG (system two) antibodies via colorimetric analysis is detailed. We explain the design and fabrication of the devices and the step-by-step protocol for the ELISA. A comparison between the techniques is described and the results obtained from them elucidated.
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