Clarilab

Inflammation and immunity

Rheumatoid factor (RA) test

Also called RA factor, anti-CCP

An antibody found in many people with rheumatoid arthritis.

Why it's done

Joint pain and swelling; anti-CCP is more specific.

What a high result can mean

Supports rheumatoid arthritis with symptoms; can also be positive in healthy older people.

Got a report with Rheumatoid factor (RA)?

Upload the PDF to Clarilab: it reads the values in your browser, flags anything out of range and tracks your results over time.

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More inflammation and immunity tests

ESRHow fast red cells settle in a tube; a general marker of inflammation. CRPA protein the liver makes during inflammation or infection. ANAAntibodies seen in autoimmune diseases such as lupus.