be beside yourself. C2 If you are beside yourself with a particular feeling or emotion, it is so strong that it makes you almost out of control: He was beside himself with grief when she died. (Definition of âbe beside yourselfâ from the Cambridge Advanced Learnerâs Dictionary & Thesaurus Â© Cambridge University Press)
Rheumatoid Factor Test. The rheumatoid factor is an antibody present in the blood of many patients with rheumatoid arthritis. Doctors measure the level of rheumatoid factor by performing a blood test. A positive rheumatoid factor test means that the patientâs level of rheumatoid factor in their blood is considered high.
A level above 20 suggests the possibility of rheumatoid arthritis. As with rheumatoid factor, some people with positive anti-CCP antibody will not have rheumatoid arthritis, but this test is somewhat more specific for rheumatoid arthritis than the rheumatoid factor.The higher the levels of anti-CCP antibody, the more likely it is to suggest rheumatoid arthritis. level above 20 suggests the possibility of rheumatoid arthritis. As with rheumatoid factor, some people with positive anti-CCP antibody will not have rheumatoid arthritis, but this test is somewhat more specific for rheumatoid arthritis than the rheumatoid factor.