Individual tests

Anti-CCP are autoantibodies your immune system produces. Autoantibodies can cause disease by attacking the body's healthy cells by mistake. Anti-CCP attacks healthy tissues in the joints, which can cause pain, swelling, and stiffness. If CCP antibodies are present in your blood, it can be a sign of rheumatoid arthritis. Anti-CCP and another test, called an RF test, are usually done to diagnose rheumatoid arthritis.
Double-stranded DNA antibodies (ds-DNA Ab) are found primarily in systemic lupus erythematosus (SLE) and are important but not entirely sufficient for diagnosing the condition. Such antibodies are present in 80% to 90% of SLE cases. They are also found in smaller fractions of patients with other rheumatic disorders and chronic active hepatitis, mononucleosis, and biliary cirrhosis.
Immunoglobulin A (IgA) is mainly found in saliva, tears, respiratory and gastric secretions, and breast milk. IgA protects against infection in the respiratory tract (sinus and lungs) and the gastrointestinal tract (stomach and intestines). This test checks your immune system for disorders if you are often sick with infections or diarrhea and can help detect certain types of cancer.
IgG antibodies are essential for fighting bacterial and viral infections. Most of the immunoglobulins in your blood are IgG. This test helps check your immune system health if you are often sick with infections or diarrhea. It also detects certain types of autoimmune disorders and cancer.
IgM (Immunoglobulin M) are your immune system's largest antibodies. They provide general but short-term protection against new infections. This test checks immune system health if you are frequently sick with infections or diarrhea and helps detect autoimmune disorders and certain types of cancer.
Interleukin-6 (IL-6) is a protein that helps regulate immune responses, which makes the IL-6 test potentially useful as a marker of immune system activation. This test may be used to help evaluate a person who has a condition associated with inflammation, such as lupus, rheumatoid arthritis, or with infections like sepsis.
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