CCL2 and rheumatoid arthritis: In RA patients with high laboratory values (ESR ≧28 mm/hr or CRP ≧ 10 mg/L), DAS28-MCP-1 score correlated strongly with DAS28-ESR and DAS28-CRP scores (Table 2), which is consistent with the very high correlation coefficients (0.984 and 0.971.