title: Synovial fluid acid phosphatase in seropositive and seronegative arthritides.
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).
authors.affiliation: Department of Rheumatology, Satalinna Hospital, Harjavalta, Finland.
authors.forename: R
authors.initials: R
authors.lastname: Luukkainen
authors.forename: R
authors.initials: R
authors.lastname: Talonen
authors.forename: K
authors.initials: K
authors.lastname: Kaarela
authors.forename: R
authors.initials: R
authors.lastname: Merilahti-Palo
authors.forename: E
authors.initials: E
authors.lastname: Rintala
mesh_terms: D000135:Acid Phosphatase / Q000378:metabolism*; D000328:Adult; D001168:Arthritis / Q000145:classification / Q000201:enzymology* / Q000276:immunology; D006801:Humans; D008875:Middle Aged; D012217:Rheumatoid Factor / Q000032:analysis; D013582:Synovial Fluid / Q000201:enzymology*
chemical_list: D012217:Rheumatoid Factor; D000135:Acid Phosphatase