Symptom duration (reported by patient) Points

• Less than 6 weeks 0
• 6 weeks or more 1

Joint Manifestation Points

• 1 Large joint 0
• 2-10 large joints 1
• 1-3 small joints (with or without manifestation in large joints) 2
• 4-10 small joints (with or without manifestation in large joints) 3
• More than 10 joints (at least 1 small joints) 5

Serological antibody Scores

• RF and CCP-0
• Do RF + or CCP + 2
• High RF + or CCP + 3

Acute phase reactants (ESR and CRP) Scores

• Normal SR or CRP 0
• Abnormal SR or CRP 1

RF: rheumatoid factor. CCP: anti-cyclic citrullinated peptide. SR: Lowering reaction. CRP: C-reactive protein. Low RF or CCP: <3 x upper limit of the reference range. High: more than 3 x upper limit of reference area

Requirement: the patient has at least 1 head joint, and the condition cannot be better explained by another condition. Score of at least 6 points required for definite diagnosis of rheumatoid arthritis.

Literature

• Sakillariou G, 2013

• Bindevevssykdommer.no
• Vaskulitt.no