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The clinical signs at the acute phase include intermittent high fever, thrombocytopenia, hemorrhage, edema, and anemia. The clinical signs at chronic and relapsing subclinical levels include emaciation and progressive weakness. Surviving horses become lifelong carriers because of the integration of the viral genome into that of the host, and these horses can produce and transmit the virus to other animals. This increases the difficulty of imposing practical control measures to prevent epidemics of this disease. Serological tests measuring the antibodies in equine sera are considered to be a reliable tool for the long-term monitoring of EIA. However, the standard serological tests for EIV either have low sensitivity (e.g., agar gel immunodiffusion test, AGID) or are time consuming to perform (e.g., ELISA and western blotting). The development of a rapid and simple method for detecting the disease is therefore critical to control the spread of EIA. In this study, we designed and developed a colloidal gold immunochromatographic (GICG) test strip to detect antibodies against EIAV based on the double-antigen sandwich. Both the p26 and gp45 proteins were used as the capture antigens, which may help to improve the positive detection rate of the strip. We found that the sensitivity of the test strip was 8 to 16 times higher than those of two commercially available ELISA tests and 128 to 256 times higher than AGID, but 8 to 16 times lower than that of western blotting. The strip has good specificity and stability. When serum samples from experimental horses immunized with the attenuated EIAV vaccine (<jats:italic>n<\/jats:italic>\u2009=\u200931) were tested, the results of the test strip showed 100% coincidence with those from NECVB-cELISA and 70.97% with AGID. When testing clinical serum samples (<jats:italic>n<\/jats:italic>\u2009=\u20091014), the test strip surprisingly provided greater sensitivity and a higher number of \u201ctrue positive\u201d results than other techniques. Therefore, we believe that the GICG test strip has demonstrated great potential in the field trials as a simple and effective tool for the detection of antibodies against EIAV.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Key points<\/jats:title>\n            <jats:p>\n              <jats:italic>\u2022 A colloidal gold immunochromatographic (GICG) fast test strip was developed with good specificity, sensitivity<\/jats:italic>\n              <jats:italic>, <\/jats:italic>\n              <jats:italic>stability, and repeatability<\/jats:italic>\n            <\/jats:p>\n            <jats:p>\n              <jats:italic>\u2022 The test strip can be used in point-of-care testing for the primary screening of EIAV antibodies<\/jats:italic>\n            <\/jats:p>\n            <jats:p>\n              <jats:italic>\u2022 Both the p26 and gp45 proteins were used as the capture antigens, giving a high positive detection rate in the testing of experimentally infected animal and field samples<\/jats:italic>\n            <\/jats:p>\n          <\/jats:sec>","DOI":"10.1007\/s00253-023-12980-9","type":"journal-article","created":{"date-parts":[[2024,1,8]],"date-time":"2024-01-08T10:02:53Z","timestamp":1704708173000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Development and evaluation of a test strip for the rapid detection of antibody against equine infectious anemia virus"],"prefix":"10.1007","volume":"108","author":[{"given":"Zenan","family":"Zhang","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kui","family":"Guo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaoyu","family":"Chu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mingru","family":"Liu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cheng","family":"Du","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhe","family":"Hu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4521-4099","authenticated-orcid":false,"given":"Xiaojun","family":"Wang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2024,1,8]]},"reference":[{"issue":"12","key":"12980_CR1","doi-asserted-by":"publisher","first-page":"1646","DOI":"10.1128\/CVI.00293-07","volume":"14","author":"I Alvarez","year":"2007","unstructured":"Alvarez I, Gutierrez G, Ostlund E, Barrandeguy M, Trono K (2007a) Western blot assay using recombinant p26 antigen for detection of equine infectious anemia virus-specific antibodies. 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