Autoantibodies

Rheumatoid factor

Condition Frequency
RA 80%
Sjogren's syndrome ~100%
Felty's syndrome ~100%
infective endocarditis = 50%
SLE 20-30%
systemic sclerosis 30%
general population 5%

Also rarely in rarely: TB, HBV, EBV, leprosy

pANCA

Condition Frequency
EGPA 60%
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