Rheumatoid Factor Assay (RF)
We use a latex agglutination slide test to detect canine rheumatoid factor in serum (antibody to canine IgG). A definitive diagnosis of Canine Rheumatoid Arthritis cannot be made without meeting 5/11 criteria established by the American Rheumatoid Association. (Berkow et al, Merck Manual of Diagnosis and Therapy, thirteenth edition , Rahaw, N.J.).