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IgG-rheumatoid factor in a population of elderly males: relationship to IgM-rheumatoid factor and rheumatoid
Clinical and Experimental Rheumatology
|October 1, 1983
Abstract:
The occurrence of IgG-rheumatoid factor (RF) reacting with rabbit IgG was studied in the sera of 1,105 elderly males from rural areas of Finland. Elevated levels of IgG-RF were found in 12 sera, 11 of which contained also IgM-RF, as measured by conventional agglutination tests and/or by enzyme-linked immunosorbent assay. Subjects with rheumatoid arthritis and those with "false" positive RF reactions did not differ from each other with respect to the occurrence of IgG-RF.