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Synovial fluid acid phosphatase in seropositive and seronegative arthritides
R Luukkainen1, R Talonen, K Kaarela
1Department of Rheumatology, Satalinna Hospital, Harjavalta, Finland.
Clinical and Experimental Rheumatology
|January 1, 1990
Abstract:
Synovial fluid acid phosphatase was investigated in 82 arthritic patients with hydropsy in a knee joint. 39 of the patients were seropositive and 43 seronegative. 36 of the seropositive group had erosive rheumatoid arthritis. The mean synovial fluid acid phosphatase in the seropositive group, 11.6 U/l (SD +/- 8.4), was significantly higher (p less than 0.001) than in the seronegative group, 6.5 U/l (SD +/- 4.8).