Rheumatoid Arthritis - 2020 ACR-EULAR Classification
≥ 6 of 10 points = definite RA
Joint Involvement:
   1 large joint - 0 points
   2-10 large joints - 1 points
   1-3 small joints, +/- large joints - 3 points
   >10 joints (at least 1 small joint) - 5 points
Serology (need at least 1):
   Negative RF, negative anti CCP Ab - 0 points
   Low positive RF or low positive anti CCP Ab - 2 points
   High positive RF or high positive anti CCP Ab - 3 points
Acute Phase reactants (need at least 1):
   Normal CRP and normal ESR - 0 points
   Abnormal CRP or abnormal ESR - 1 points
Duration of symptoms:
   < 6 weeks - 0 points
   ≥ 6 weeks - 1 points

- BWH Medicine Residency @BrighamMedRes

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