[Diagnostic significance of identification of anti-entamoeba histolytica antibodies (author's transl)].
Examinations were performed with the indirect immunofluorescence test (IFAT) and the indirect haemagglutination test (IHAT). Negative titers (less than 1:5) do not exclude an infection with E. histolytica. Titers up to 1:80 in both reactions are found in patients with negative stool specimens or indicate an asymptomatic infection of the intestinal lumen, an incipient or past symptomatic amoebiasis. IFAT values of 1:160 together with a negative or positive IHAT are also suggestive of the two last-mentioned types of infection. These titers are also found in patients with gastrointestinal disorders of other orgin. IFAT values higher than 1:60 with a positive IHAT are probably due to an invasive amoebiasis. Titres are, however, only diagnostic pointers.
D000562:Amebiasis / Q000175:diagnosis*; D000906:Antibodies; D004748:Entamoeba histolytica / Q000276:immunology; D004749:Entamoebiasis / Q000175:diagnosis*; D005069:Evaluation Studies as Topic; D005188:False Negative Reactions; D005189:False Positive Reactions; D005243:Feces / Q000469:parasitology; D005455:Fluorescent Antibody Technique; D006386:Hemagglutination Tests; D006801:Humans
D000906:Antibodies
Diagnostische Bedeutung des Anti-körpernachweises gegen Entamoeba histolytica