Preliminary study of false positive IFAT for hydatidosis in malignancy

ABSTRACT

False positivity for hydatidosis was studied in 146 patients with malignancy using IFAT. Twenty non hydatid patients and 20 positive sera by IHAT were used as negative and positive controls respectively. A simple procedure was devised for preparation of scolices antigen from camel fresh hydatid cyst with 1% formalin as fixative for 30 minutes. False positivity was 39.04%. The possible reasons for the false positivity were discussed and C-reactive protein was investigated