An evaluation of ELISA kits for rubella IgG- and IgM-antibodies.

Two ELISA kits for rubella IgG- and IgM-antibodies, respectively, were compared with a haemagglutination inhibition (HAI) test (after ultracentrifugation of the sample if IgM was to be detected). When screening 535 samples from pregnant women, 99.6% agreement was found between the IgG-ELISA and HAI; one true IgM-positive was encountered in this group with the IgM-ELISA.