The RF test must be interpreted in conjunction with a person's symptoms and clinical history. In those with symptoms and clinical signs of rheumatoid arthritis, the presence of significant concentrations of RF indicates that it is likely that they have RA.Higher levels of RF generally correlate with more severe disease and a poorer prognosis. A negative RF test does not rule out RA.About 20% of people with RA will have very low levels of or no detectable RF. In these cases, a CCP antibody test may be positive and used to confirm RA.he RF test must be interpreted in conjunction with a person's symptoms and clinical history. In those with symptoms and clinical signs of rheumatoid arthritis, the presence of significant concentrations of RF indicates that it is likely that they have RA.
The definition of bout means a fight or competition. An example of a bout is a boxing match. Bout is defined as a period of time where you have to deal with something. An example of a bout is a week of having a stomach flu.
a contest or trial of strength, as of boxing. 2. period; session; spell: a bout of illness. 3. a turn at work or any action. 4. a going and returning across a field, as in mowing or reaping.