CRP and rheumatoid arthritis: Elevated levels of ESR (median 37.5 mm/h, IQR [23.8–68.3]) and CRP (median 13.5 mg/dL, IQR [3.8–32.0]) were observed in patients with RA, with a median DAS28-CRP of 4.6 and a median HAQ disability index of 0.6.