Blood Test Can Predict Rheumatoid Arthritis Before Symptoms Arise Researchers from University Hospital in Umea, Sweden, have identified several cytokines, cytokine-related factors, and chemokines that increase significantly prior to rheumatoid arthritis (RA) disease onset. Blood Test Can Predict Rheumatoid Arthritis Before Symptoms Arise Researchers from University Hospital in Umea, Sweden, have identified several cytokines, cytokine-related [...]