Intestinal fatty acid binding protein (IFABP) is a 15-kDa cytoplasmic protein located in small intestinal enterocytes involved in the uptake and transport of polar lipids such as fatty acids from the small-bowel lumen, which has been associated with injury to the intestinal mucosa and injury common to inflammatory bowel diseases.6 When the integrity of the enterocyte membrane is compromised, I-FABP are rapidly released into the circulation. Here, FABP2 is linked to inflammatory bowel disease.