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.
Being Rh-negative means you don't have a certain protein (D antigen or the Rh factor) on the surface of your red blood cells.If you do have it, you're Rh-positive.So the terms Rh-negative and Rh-positive are really just terms that further define what type of blood a person has, beyond the general blood type categories of A, B, AB, and O.f you do have it, you're Rh-positive. So the terms Rh-negative and Rh-positive are really just terms that further define what type of blood a person has, beyond the general blood type categories of A, B, AB, and O.