They are present in approximately 60 to 80 percent of people diagnosed with RA. Studies have found that, for many people, the antibodies precede the development of clinical symptoms by 5 to 10 years. If you have symptoms consistent with RA and a positive test for the antibody, an RA diagnosis is almost a certainty.Previously, seropositivity was defined in terms of an antibody called rheumatoid factor (RF).tudies have found that, for many people, the antibodies precede the development of clinical symptoms by 5 to 10 years. If you have symptoms consistent with RA and a positive test for the antibody, an RA diagnosis is almost a certainty.
Blood can be separated into two major components: Formed elements and Plasma. i. Blood cells or formed elements (about 45% of blood), which is composed mainly of. red blood cells (RBC) i.e. 99% of blood cells are RBC and the other 1% is white blood.
Formed Elements. Formed elements are the simplest substances or constituent parts of a system; in the case of blood, they are the non-fluid elements. Blood is typically about 80 percent water, which can be best thought of as the medium of transmission for the formed elements of blood.All formed elements in blood are generated from bone marrow.lood is typically about 80 percent water, which can be best thought of as the medium of transmission for the formed elements of blood. All formed elements in blood are generated from bone marrow.