Serodiagnosis of giardiasis: comparative study

The present study was performed to evaluate different serological tests namely, enzyme linked immunosorbent assay [ELISA], indirect haemagglutination test [IHAT] and gel diffusion [GD] for diagnosis of giardiasis in human cases. Sonicated cysts of Giardia lamblia were used as antigen. The sensitivity of ELISA IgG, IHAT and GD was 55%, 75% and 8.3%, respectively; while the specificity was 86.7%, 76.6% and 96.7%, respectively