A rheumatoid factor test measures the amount of rheumatoid factor in your blood. which are proteins produced by your immune system that can attack your normal cells.
Results are usually reported in one of two ways:
Less than 40-60 u/mL or
Less than 1:80 (1 to 80) titer
My Dr. told me appox 10yr.s ago I have ra. They put me on methotrexate. The other numbers on my test results that I wondered about were the sed rate 0f 8, bun/creat ratio 37.1 and alt of 35 ?