Diagnosis and tests for rheumatoid arthritis

There is no single test for rheumatoid arthritis. Doctors diagnose it by combining the history, a joint examination, blood tests and imaging. An early diagnosis, ideally within the first three to six months of symptoms, leads to better outcomes.

Clinical assessment The doctor asks about morning stiffness, which joints are affected, how long symptoms have lasted and family history, and checks for swelling and tenderness.

Blood tests

• Rheumatoid factor (RF) and anti-CCP antibodies. Anti-CCP is more specific.
• ESR and CRP, which show the level of inflammation.
• Complete blood count, which may show anaemia.
• Liver and kidney tests, needed before starting medicines.
• Tests to rule out other conditions, such as ANA for lupus, uric acid for gout, and hepatitis B and C and TB screening before certain treatments.

Imaging

• X-rays of the hands and feet show joint damage, but may be normal early on.
• Ultrasound can detect swelling of the joint lining.
• MRI is more sensitive for early changes.

Classification criteria Doctors may use the ACR/EULAR scoring system, which counts joints, antibody results, inflammation markers and duration of symptoms.

Monitoring Disease activity scores such as DAS28, along with regular blood tests, track treatment response.

Ayurvedic view (interpretive) Traditional assessment looks at pulse, digestion and joint signs. These can add context but cannot confirm RA, so modern tests remain essential.

Remember See a rheumatologist if joint swelling lasts more than six weeks. A normal first test does not rule out RA.