The following are examples of types of financial analysts: Portfolio managers select the mix of products, industries, and regions for their companyâs investment portfolio. These managers are responsible for the overall performance of the portfolio.
Rheumatoid factor (RF) facts. 1  Rheumatoid factor is an antibody that is detectable in the blood of approximately 80% of adults with rheumatoid arthritis.2  Sometimes rheumatoid factor can be detected in the blood of normal individuals and of those with other autoimmune diseases that are not rheumatoid arthritis.heumatoid factor (RF) facts. 1  Rheumatoid factor is an antibody that is detectable in the blood of approximately 80% of adults with rheumatoid arthritis.
Rheumatoid nodules usually occur in patients with severe RA. Nearly all RA patients with nodules test positive for rheumatoid factor. Rheumatoid factor is positive in 70% to 80% of people with RA. Studies show that when RA is linked with a positive rheumatoid factor test, it may indicate more aggressive disease. Other factors may increase the chance of RA nodules.