Which tests are most useful in evaluating a patient with chronic polyarticular symptoms?
Complete blood count, creatinine, urinalysis, liver-associated enzymes, erythrocyte sedimentation rate or C-reactive protein, antinuclear antibody (ANA), RF, anti-cyclic citrullinated peptide antibody, and radiographs. In some patients, consider serum uric acid, thyroid-stimulating hormone, iron studies, human leukocyte antigen-B27, and synovial fluid analysis.
