2nd order laboratory parameters – depending on the results of the history, physical examination and obligatory laboratory parameters – for differential diagnostic clarification.
- Inflammatory parameters – CRP (C-reactive protein) or ESR (erythrocyte sedimentation rate).
- Rheumatological diagnostics: RF (rheumatoid factor), ANA (antinuclear antibodies), anti-citrulline antibodies – if rheumatoid arthritis is suspected (pcP).
