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.
What does a positive thyroid peroxidase test mean? 1  Most people with chronic thyroiditis (70%-90%) display a positive TPO test. 2  Other autoimmune disorders that may cause a positive TPOAb test include: 3  Sjogren's syndrome, 4  lupus, 5  rheumatoid arthritis, and. 6  pernicious anemia. 7  about 3% of people with a positive TPOAb test show no evidence of disease.