Laboratory examinations include :


  • Blood test 
    • ESR (Erythrocyte Sedimentation Rate) is increased in RA and it indicates the presence of inflammation in the body
    • Blood cell count shows increased white blood cells and platelets because of inflammation


  • Serology test 
    • Rheumatoid Factor (it is an abnormal antibody) is present in 70-80% of RA cases. Patients with a high titer rheumatoid factor are more likely to have destructive joint disease, extra-articular symptoms, and greater functional disability.


X-Ray: X-ray during the early stage usually do not show any changes but as the disease progresses the joint space is decreased anddegenerative changes can be seen in the cartilage and bone.


Synovial fluid examination to rule out infection.