In addition to symptoms and a doctor's exam, blood tests and X-rays are commonly used to confirm rheumatoid arthritis. The majority of people with rheumatoid arthritis have an antibody called rheumatoid factor (RF) in their blood, although RF may also be present in other disorders. A new test for rheumatoid arthritis that measures levels of antibodies in the blood (called the anti-CCP test) is more specific and tends to be only elevated in patients with rheumatoid arthritis or in patients about to develop rheumatoid arthritis. The presence of anti-CCP antibodies can also be used to predict which patients will get more severe rheumatoid arthritis.
X-rays are used to diagnose osteoarthritis, typically revealing an uneven loss of cartilage and spurring of the underlying bone. Sometimes blood tests and joint aspiration (using a needle to draw a small sample of fluid from the joint for testing) are used to rule out other types of arthritis. If your doctor suspects infectious arthritis, testing a sample of fluid from the affected joint will usually confirm the diagnosis and guide treatment.
Since you’ve recently been diagnosed with osteoarthritis, ask your doctor these questions at your next visit.
1. What caused my arthritis?
2. What drugs can I take if I frequently have stomach problems with pain relievers?
3. Would prescription medication be appropriate for my osteoarthritis?
4. What are some appropriate exercises for me to try?
5. Will stretching and flexing the joint help it feel better?
6. Why does the weather affect my symptoms?
7. Does physical activity help osteoarthritis...
SOURCES: American College of Rheumatology. DePuy Orthapaedics. National Institute of Arthritis and Musculoskeletal and Skin Diseases. Arthritis Foundation. Markkula Center for Applied Ethics, Santa Clara University. Arthritis-forum.net. The Center for Current Research. National Internet Health. Alternative Medicine Foundation.