DIG-ELISA for the serologic diagnosis of toxoplasmosis.

: A new serologic method, diffusion in gel-enzyme-linked immunoassay (DIG-ELISA) is described and compared with the indirect fluorescent antibody (IFA) and indirect hemagglutination assay (IHA) for the serologic diagnosis of toxoplasmosis. The results demonstrate that DIG-ELISA is a viable alternative to IFA and IHA because of its simplicity, economy, versatility, and potential for standardization.