One of the best-characterized tests for the diagnosis of neurocysticercosis is the enzyme-linked immunoelectrotransfer blot assay, developed at the CDC, which uses lentil lectin-purified glycoproteins (LLGPs) extracted from Taenia solium cysticerci. The purification of the LLGP antigens has been difficult to standardize, and the polyacrylamide gel system used for the immunoblot assay is not easily transferable to other laboratories. In this study, we developed a multiantigen printing immunoassay (MAPIA) to compare the performance of multiple recombinant Taenia solium proteins with the potential for the detection of cysticercosis and taeniasis. We prepared MAPIA strips using six cysticercosis and two taeniasis diagnostic proteins and compared the performance of the proteins with sera collected from defined cysticercosis and taeniasis cases. Of the six cysticercosis antigens, rT24H performed well in detecting cases with two or more viable cysts in the brain (sensitivity and specificity, 97% and 99.4%, respectively); the use of a combination of cysticercosis antigens did not improve the sensitivity of the test and decreased the specificity. None of the antigens could differentiate the different clinical presentations of cysticercosis. Both of the taeniasis antigens (rES33 and rES38) had the same sensitivity of 99.4% and specificities of 93.9% and 94.5%, respectively. Some crossreactivity against rES33 and rES38 was found, especially with sera from cases infected with Schistosoma mansoni. We conclude that MAPIA is a simple and effective tool that may be used to compare antibody responses to different cysticercosis and taeniasis antigens and, in this case, may be useful for the rapid detection of T. solium cases.Excellent laboratory methods with high specificities and sensitivities for the immunodiagnosis of neurocysticercosis and taeniasis exist. The enzyme immunoelectrotransfer blot (EITB) for cysticercosis is accepted as the "gold standard" assay for the serological identification of cysticercosis (16,19). Unfortunately, the test employs complex native proteins in immunoblot assay formats, and therefore, the tests are not easily adaptable to field use. Over the last 10 years we systematically purified and cloned the diagnostic glycoproteins expressed in the lentil lectin glycoprotein fraction. We found that the seven diagnostic proteins are members of three antigenic protein families: the GP50, GP24, and 8-kDa families. The recombinant proteins or synthetic peptides identified in the first-generation assays are available for further comparative analysis.Many of these recombinant proteins (rGP50 and rT24H, used for the diagnosis of cysticercosis, and rES38 and rES33, used for the diagnosis of taeniasis) and synthetic peptides (sTsRS1, sTS18var1, sTSRS2var1, and sTS14, used for the diagnosis of cysticercosis) have been evaluated by EITB or enzyme-linked immunosorbent assay (ELISA) and have performed well (3, 7-9, 11, 18). Unfortunately, the development of diagnostic methods that use all of these proteins will be exp...