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.
A. A. A. Doctors often give people the rheumatoid factor blood test to help diagnose rheumatoid arthritis (RA). It measures rheumatoid factor, an immune system chemical thatâs in the blood of many, but not all, people with RA. Keep in mind that by itself, this test does not show whether you have RA.