EVALUATION OF INDIRECT HEMAGGLUTINATION AND INTRADERMAL TESTS ON HYDATID AND NON-HYDATID CASES

Abstract

Evaluation of the immediate intradermal (ID) test showed a direct relationship between N concentration and sensitivity. Antigens of low N-concentration were less reactive but more specific. Intradermal antigens prepared from Echinococcus multilocularis can be used in Isfahan, Iran, for the diagnosis of E. granulosus in man. The ID delayed reaction was observed in a few patients who had positive immediate skin tests. Because of its high sensitivity, the indirect hemagglutination (IHA) test was preferred for serological diagnosis of echinococcosis. The IHA test appears to offer good sensitivity and the ID, with an antigen of low N concentration, good specificity.