[Causes of false-positive results in serological studies of HIV infection]

Analysis of the results of testing 150880 serum samples with the Antigen and Recombinant-HIV types test systems, manufactured in Russia, has demonstrated the relationship between the false-positive results and the type of the test system employed and the category of the examined subjects. Depletion of the sera with NaCl and CO2 reduced the incidence of false-positive results in analyses of the pregnant women's sera. Examinations of the sera in the Combi-HIV test system have revealed E. coli antigens in 8.8% of the sera.