[Comparison of 4 techniques for the diagnosis of Giardia lamblia in stool of children from Belém city, Pará State, Brazil].

We report the evaluation of four techniques for Giardia lamblia diagnosis in children's stool. The Iron haematoxilin staining and direct examination with lugol showed lower positivity, while the method of Faust et al. Continues to be a good option for G. lamblia diagnosis and Immunoenzymatic assay increases the detection of this parasite.