CRP and rheumatoid arthritis: Similar to the correlations between CRP and metabolic data derived from RA patients’ serum and urine samples, a relationship was also seen between CRP and metabolic data derived from the sera (n=41, r2 = 0.7209, 9 LV, p<0.001) and urine (n=25, r2 = 0.6117, 8 LV, p=0.025) of UA patients (Supplementary Figure 3).