<prompt> Sabin Feldman dye test is used for diagnosis of:LeishmaniasisEchinococcosisToxoplasmosisBalantidiasis  <response>: Ref. Textbook of Microbiology and Immunology BY Parija. Page. 500 Toxoplasma:Tests includeSabin-Feldman dye test, which tests for IgG antibodiesELISAs targeted at IgM, IgA and IgEDifferential agglutination tests and IgG avidity tests.Sabin Feldman Dye testThe test measures the total amount of antibody in serum which is capable of complement mediated killing of toxoplasma tachyzoites.Serum is diluted across a microtitre plate and the end point is the dilution at which 50 of the tachyzoites are dead 