CRP and rheumatoid arthritis: Nevertheless, the plasma levels of retinol presented an inverse correlation with the ESR, DAS-28, and CRP; the vitamin C, a negative relationship with ESR and the HAQ score; the levels of uric acid, in turn, were inversely correlated with the thrombocyte count, pointing to the association between serum uric acid levels and the degree of inflammation in RA patients [77].