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 rheumatoid factor rf blood test measures the amount of the rf antibody present in the blood normally antibodies are produced by the immune system to help destroy and eliminate invading bacteria and viruses that can cause diseasebut the rf antibody can attach to normal body tissue resulting in damagef rf is present the red blood cells clump together this method is often used to confirm the presence of rf nephelometry test this test mixes the blood being tested with antibodies that cause the blood to clump if rf is present