CRP and inflammatory bowel disease: CRP, erythrocyte sedimentation rate (ESR), anti-neutrophil cytoplasm antibodies (ANCA), anti-saccharomyces cerevisiae antibodies (ASCA), Leucine-Rich α2 Glycoprotein, and fecal calprotectin are commonly-used biomarkers as indicators of disease activity in patients with autoimmune diseases like IBD [58].