Figure 4From: Eosinophilic gastroenteritis with refractory ulcer disease and gastrointestinal bleeding as a rare manifestation of seronegative gastrointestinal food allergy Hemoglobin and serum IgE levels in the patient with recurrent gastrointestinal bleeding and seronegative gastrointestinal allergy. After elimination of the causative allergens along with antiallergic treatment a continuous increase of hemoglobin, iron and ferritin levels was noted, while serum IgE dropped to nearly normal values. The laboratory changes were accompanied by a complete endoscopic and histologic healing of gastrointestinal ulcers (Figure 1).Back to article page