MANCHESTER, England — Even when C-reactive protein (CRP) levels are normal, patients with seropositive rheumatoid arthritis (RA) could still be experiencing significant disease that persists over time ...

DEAR DR. ROACH: For the past six years, every time I have my annual labs done, my CRP has been very high. Normal range is listed as 0-3 mg/L. My results have consistently been 7-10 mg/L or more. When ...