Rheumatoid factor

This is an important test that measures the amount of rheumatoid factor in the blood.

Venous blood
1 tests included
2 days turnaround



About Rheumatoid factor

What is rheumatoid factor?

Rheumatoid factor typically refers to an autoantibody produced by the immune system, which was first discovered in the autoimmune condition rheumatoid arthritis.

Antibodies are proteins typically produced by the immune system to target and protect against harmful entities. In some cases, the immune system can malfunction, producing antibodies which target and attack the body’s own cells. Disorders caused by this process are called autoimmune diseases.

The presence of rheumatoid factor in elevated concentrations is often used as an indicator of rheumatoid arthritis, though it can be elevated for other reasons.  

Why take the test?

This test measures the amount of rheumatoid factor in the blood. It is typically used in conjunction with a physical examination and other tests to diagnose the autoimmune condition rheumatoid arthritis.


What's tested


How it works



Purchase your Kit

Just order a test online and get your kit delivered right to your door unless you are ordering a COVID-19 Fit to Fly test where you will be given appointment options to attend our clinics across the United Kingdom for a nose and throat swab PCR test at the checkout stage.



Take your test and post

Follow our simple instructions to take your sample and post back the enclosed prepaid envelope to our accredited lab for processing. We also offer home or workplace visits by a qualified nurse. For COVID-19 Fit to Fly tests you must attend one of our partner clinics for our trained collection officers to take your sample. You will then have the results emailed to you.



Get results directly to your dashboard

You will receive an email notification from our medical team when your results are available on your secure personalised health dashboard.