Rheumatoid Factor
A supporting test in the assessment of inflammatory joint disease.
Also known as: RA factor, RF, rheumatoid arthritis test
Price on request
We can collect this sample at your home, free of charge. Book a home visit.
- Turnaround
- 24–48 hours
- Preparation
- No fasting needed. Eat and drink normally.
- Sample
- Blood sample
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About this test
Rheumatoid factor is positive in most established rheumatoid arthritis, but also in chronic infection, liver disease and a proportion of healthy older people, and it is negative early in the disease. Anti-CCP is the more specific companion test.
What it measures
- Rheumatoid factor titre
A note on results. A single test is one part of a clinical picture, not a diagnosis. Discuss your report with a qualified doctor, who will read it alongside your history and examination.
Related to
- Bones & joints
- Autoimmune
Often ordered with this
ANA / ANF Screening
The first-line screen for lupus and related connective tissue disease.
- 3–5 working days
- No fasting
- Home collection
ANA Group Test (24 Antigens)
Identifies which specific nuclear antigens the antibodies are directed against.
- 5–7 working days
- No fasting
- Home collection
ANCA & Anti-GBM Antibodies
The vasculitis panel, requested when the kidneys and lungs are both involved.
- 5–7 working days
- No fasting
- Home collection