Issue 22, 2016

One-step immunoassay of C-reactive protein using droplet microfluidics

Abstract

We present a wash-free high-sensitivity immunoassay of C-reactive proteins with droplet microfluidics. Microbeads are encapsulated within droplets for the immunoassay, and the droplets are scanned by a fluorescence detection platform to quantify the amount of proteins captured on the microbeads. The limit of detection determined by our platform is 0.01 μg mL−1, which is ten times more sensitive than conventional high-sensitivity C-reactive protein assays. With the decrease in diffusion distance within droplets, the immunoassay requires only half of the time required for similar conventional approaches. This approach for carrying out immunoassays can potentially be applied to other biomarkers beyond C-reactive proteins.

Graphical abstract: One-step immunoassay of C-reactive protein using droplet microfluidics

Supplementary files

Article information

Article type
Paper
Submitted
09 Sep 2016
Accepted
06 Oct 2016
First published
14 Oct 2016

Lab Chip, 2016,16, 4359-4365

One-step immunoassay of C-reactive protein using droplet microfluidics

M. Y. H. Tang and H. C. Shum, Lab Chip, 2016, 16, 4359 DOI: 10.1039/C6LC01121G

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