Autoantibodies Ani Ro and Anti La are completely absent
in
Decreasing order of frequency of finding Anti - Ra (or SSa) & Anti- La (or SSb) antibodies is Sjogren's syndrome, SLE, Systemic sclerosis. SSa antibodies may be occasionally found but SSb antibodies may be totally absent in rheumatoid arthritis.
Systemic Lupus erythematosus
Sjogren's syndrome
Diffuse Scleroderma
Rheumatoid arthritis