Serological detection of antibodies to SARS-CoV-2 is essential for establishing rates of
seroconversion in populations, and for seeking evidence for a level of antibody that may be
protective against COVID-19 disease. Several high-performance commercial tests have been
described, but these require centralised laboratory facilities that are comparatively
expensive, and therefore not available universally. Red cell agglutination tests do not
require special equipment, are read by eye, have short development times, low cost and can
be applied at the Point of Care. We describe a quantitative Haemagglutination test (HAT) for
the detection of antibodies to the receptor binding domain of the SARS-CoV-2 spike protein.
The HAT has a sensitivity of 90% and specificity of 99% for detection of antibodies after a
PCR diagnosed infection. We will supply aliquots of the test reagent sufficient for ten
thousand test wells free of charge to qualified research groups anywhere in the world.
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Posted 26 May, 2021
Posted 26 May, 2021
Serological detection of antibodies to SARS-CoV-2 is essential for establishing rates of
seroconversion in populations, and for seeking evidence for a level of antibody that may be
protective against COVID-19 disease. Several high-performance commercial tests have been
described, but these require centralised laboratory facilities that are comparatively
expensive, and therefore not available universally. Red cell agglutination tests do not
require special equipment, are read by eye, have short development times, low cost and can
be applied at the Point of Care. We describe a quantitative Haemagglutination test (HAT) for
the detection of antibodies to the receptor binding domain of the SARS-CoV-2 spike protein.
The HAT has a sensitivity of 90% and specificity of 99% for detection of antibodies after a
PCR diagnosed infection. We will supply aliquots of the test reagent sufficient for ten
thousand test wells free of charge to qualified research groups anywhere in the world.
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