Table 1: ACR-Eular Criteria (> 6 Definitive RA).
| JOINT DISTRIBUTION (0-5) | |
| 1 large joint | 0 |
| 2-10 large joints | 1 |
| 1-3 small joints (large joints not counted) | 2 |
| 4-10 small joints (large joints not counted) | 3 |
| > 10 joints (at least one small joint) | 5 |
| SEROLOGY (0-3) | |
| Negative RF AND negative ACPA | 0 |
| Low positive RF OR low positive ACPA | 2 |
| High positive RF OR high positive ACPA | 3 |
| SYMPTOM DURATION (0-1) | |
| < 6 weeks | 0 |
| ≥ 6 weeks | 1 |
| ACUTE PHASE REACTANTS (0-1) | |
| Normal CRP AND normal ESR | 0 |
| Abnormal CRP OR abnormal ESR | 1 |