FABP2 and inflammatory bowel disease: The assessment of IFABP concentration in serum samples showed statistical differences for samples from CD patients at diagnosis (mean value 2898.89 pg/mL, range 616.83–7295.95 pg/mL), non-CD controls (mean value 1356.49 pg/mL, range 256.51–3433.33 pg/mL), CD patients on GFD (mean value 1766.84 pg/mL, range 391.42–3955.88 pg/mL), and IBD patients (mean value 744.92 pg/mL, range 165.89–1558.2 pg/mL).