Large-scale evaluation of a rapid diagnostic test for diarrhea caused by enterotoxigenic Escherichia coli targeting the heat-labile toxin

We standardized an immunochromatographic test (IC) for heat-labile toxin I (LT-I) detection using LT-I antibodies and a specific platform containing the apparatus for application, assembly and cutting. IC detected as little as 62.5 ng/mL of purified LT-I toxin and presented 91% sensitivity, 99.5% specificity and 96.0% accuracy, thereby proving to be an excellent point-of-care test for the diagnosis of enterotoxigenic E. coli infection in low-income countries.
Keywords
ETEC;  Heat-labile toxin;  Antibodies;  Immunochromatographic test;  Diagnosis

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Henrique C, Caetano BA, Mitsunari T, dos Santos LF, Piazza RMF, Rocha LB. Large-scale evaluation of a rapid diagnostic test for diarrhea caused by enterotoxigenic Escherichia coli targeting the heat-labile toxin. J. Microbiol. Methods. 2018 Jan;144:125-7. doi:10.1016/j.mimet.2017.11.020.
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