What does Rheumatoid factor
Hello, Rheumatoid factor is an inflammatory marker. It shows that patient has chances of developing arthritis. But value 6 does not mean anything. It can be seen with range of this test. So suppose normal range is below 6 so that means it is positive.  I would suggest you to meet your physician and get your self examined. If you are otherwise normal but only Ra factor is raised than it is normal.  I hope this answer will be useful for you. Let me know if there is any other followup questions. Thanks