[Serum-treatment in the rubella hi-test by menas of silicic acid (author's transl)].

The serum treatment for the removal of nonspecific inhibitors in the Rubella HI-test with silicic acid was investigated by means of isolated lipoproteins and after a micromethod by means of Sindbis-virus. Reduction of the three classes of lipoproteins after treatment with silicic acid was good. In the Sindbis HI-test only 2% of the sera showed low titers after treatment. The method proved to be a reliable tool as removal of unspecific inhibitory activity is concerned.