Rheumatiod factor isotype in rheumatiod arthritis patients

الملخص EN

Background : Rheumatiod factor in patients with Rheumatoid arthritis (RA) could be of IgM, IgG, or IgG isotypes.

Aim : To study the occurance of each or all these isotypes in RA patients .

Methods : Enzyme linked Immune Sorbent Assay (ELISA) & Latex agglutination test were used to asses RF in 74 patients with RA.

Results : Using ELISA, 58 (78.

4 %) patients had positive RF (IgM 48.

6 %, IgG in 47.

3 % & IgA in 54.

1% ), while only 43 (58.1) patients were positive by AG .

Conclusion All RF isotypes should be assessed in patients with RA.