Rheumatoid Arthritis
Rheumatoid Arthritis / Early Inflammatory Arthritis
Classification, disease activity and prediction tools for RA and early inflammatory arthritis.
For clinicians only. This tool is for healthcare professionals and clinical education only. It does not diagnose, replace clinical judgement, or replace specialist assessment. Any decisions about a patient must be based on full clinical assessment, investigations where appropriate, and current clinical guidelines.
Classification criteria
2010 ACR/EULAR Classification Criteria for RA
Score joint involvement, serology, acute-phase reactants and duration to classify RA.
Disease activity score
DAS28-CRP
28-joint disease activity score using CRP, tender/swollen joint counts and patient global.
Disease activity score
DAS28-ESR
28-joint disease activity score using ESR, tender/swollen joint counts and patient global.
Disease activity score
CDAI
Clinical Disease Activity Index. A lab-free composite for RA disease activity.
Prediction rule
Leiden Clinical Prediction Rule
Predicts risk of progression from undifferentiated arthritis to RA at 1 year.