4 doctors weighed in:
What does rheumatoid factor mean for pregnancy?
4 doctors weighed in

Dr. Pierre Moeser
Internal Medicine - Rheumatology
3 doctors agree
In brief: Depends on why
The rheumatoid factor blood test is designed to confirm rheumatoid arthritis in patients who have the symptoms and the physical signs of rheumatoid arthritis (ra).
If there is no hard evidence to suspect ra, the test is worthless as it cannot diagnose RA just by being positive. There are numerous causes for a false positive rheumatoid factor. Healthy individuals may have a positive test.

In brief: Depends on why
The rheumatoid factor blood test is designed to confirm rheumatoid arthritis in patients who have the symptoms and the physical signs of rheumatoid arthritis (ra).
If there is no hard evidence to suspect ra, the test is worthless as it cannot diagnose RA just by being positive. There are numerous causes for a false positive rheumatoid factor. Healthy individuals may have a positive test.
Dr. Pierre Moeser
Dr. Pierre Moeser
Thank
Get help from a real doctor now
Dr. Adam Levy
Board Certified, Obstetrics & Gynecology
33 years in practice
1M people helped
Continue
108,000 doctors available
Read more answers from doctors