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 factor (RF) â Rheumatoid factor is an antibody found in many patients with rheumatoid arthritis. It is one of several criteria used in diagnosing RA, as 80 percent of RA patients have RF in their blood. A RF test can be positive in response to other inflammatory or infectious diseases other than RA.