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  • Title: Solid-phase antibody capture hemadsorption assay for detection of hepatitis A virus immunoglobulin M antibodies.
    Author: Summers PL, Dubois DR, Cohen WH, Macarthy PO, Binn LN, Sjogren MH, Snitbhan R, Innis BL, Eckels KH.
    Journal: J Clin Microbiol; 1993 May; 31(5):1299-302. PubMed ID: 8388890.
    Abstract:
    A solid-phase antibody capture hemadsorption (SPACH) assay was developed to detect hepatitis A virus (HAV)-specific immunoglobulin M (IgM) antibodies in sera from humans recently infected with hepatitis. The assay is performed with microtiter plates coated with anti-human IgM antibodies to capture IgM antibodies from the test sera. HAV-specific IgM antibody is detected by the addition of HAV hemagglutinating antigen and goose erythrocytes. Hemadsorption of erythrocytes to antigen-antibody complexes attached to the solid phase indicate the presence of IgM antibodies. The SPACH assay was compared to a commercial radioimmunoassay and was found to be equally or more sensitive and specific for the detection of HAV IgM antibodies. The SPACH assay is an alternative, rapid assay that doesn't require hazardous substrates or radioactivity for the detection of HAV-specific antibodies.
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