Rose-Waaler test is a?: (A) Co-agglutination test, (B) Latex agglutination test, (C) Slide agglutination test, (D) Haemagglutination test
Answer is D. Rose-Waaler test is a passive haemagglutination test. It is done in rheumatoid ahritis. Autoantibody (RA factor) in the serum acts as antibody to gamma globulin. RA factor can agglutinate red cells coated with globulins.