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Rapid detection of Shiga toxin type II using lateral flow immunochromatography test strips of colorimetry and fluorimetry

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Abstract

Two types of lateral flow immunochromatographic test strips (LFITS) using gold nanoparticles and fluorescent CdTe quantum dots (QDs) as signal labels, respectively, were developed for Shiga toxin type II (STX2) assays. Under optimal conditions, the corresponding visual detection limits were 25 ng mL−1 and 5 ng mL−1, respectively. The test results of gold based LFITS can be recognized directly by the naked eye, whereas the visualized results of CdTe QDs based LFITS can be observed by the aid of a UV lamp. Both assays showed good specificity and stability. The inexpensive LFITS were promising for the rapid clinical detection of STX2.

Graphical abstract: Rapid detection of Shiga toxin type II using lateral flow immunochromatography test strips of colorimetry and fluorimetry

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Publication details

The article was received on 08 Oct 2019, accepted on 26 Oct 2019 and first published on 29 Oct 2019


Article type: Paper
DOI: 10.1039/C9AN01996K
Analyst, 2020, Advance Article

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    Rapid detection of Shiga toxin type II using lateral flow immunochromatography test strips of colorimetry and fluorimetry

    T. Lu, K. Zhu, C. Huang, T. Wen, Y. Jiao, J. Zhu, Q. Zhang and S. Ding, Analyst, 2020, Advance Article , DOI: 10.1039/C9AN01996K

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