 Various immunoassays for T. cruzi are available and can be used to distinguish among strains ( zymodemes of T.cruzi with divergent pathogenicities ) . These tests include : detecting complement fixation , indirect hemagglutination , indirect fluorescence assays , radioimmunoassays , and ELISA . Alternatively , diagnosis and strain identification can be made using polymerase chain reaction ( PCR ) . 
 Various immunoassays for T. cruzi <a href='drop_aux' title='1'><mark>are</mark></a>available and can be used to distinguish among strains ( zymodemes of T.cruzi with divergent pathogenicities ) . These tests include : detecting complement fixation , indirect hemagglutination , indirect fluorescence assays , radioimmunoassays , and ELISA . Alternatively , diagnosis and strain identification can be made using polymerase chain reaction ( PCR ) . 
Various immunoassays fir T. cruzi available and can be used to distinguish among strains ( zymodemes of T.cruzi w divergent pathogenicities ) . dem tests include : detecting complement fixation , indirect hemagglutination , indirect fluorescence assays , radioimmunoassays , and ELISA . Alternatively , diagnosis and strain identification can be made usin polymerase chain reaction ( PCR ) .