Detection of IgM rheumatoid factors using ELISA and agglutination tests with new latex

: An ELISA for the detection of IgM rheumatoid factors was developed. Additionally agglutination tests on the basis of polystyrene latex particles were developed. The results of these tests were compared with one another and with those of Latex-Schnelltest from SSW. A good agreement between ELISA and latex agglutination tests was found.