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.
Components of blood Blood is the medium in which all the cells are carried to transport nutrients and oxygen to the cells of the body. Blood is made up of four components. These are red blood cells, white blood cells, platelets and plasma. Blood is made up of 55% plasma and 45% solids. Red blood cells 99% of red blood cells are red blood cells or erythrocytes. They are red in colour due to the prescience of a red coloured protein called haemoglobin.