Abstract:ObjectiveTo study the characteristics of allergens in patients with allergic rhinitis (AR) in Liaoning Province and to explore significance of serological IgE detection.MethodsSerum IgE (total IgE and allergenspecific IgE) detection was performed to 2883 patients with clinically suspected AR in our hospital. The results were recorded and analyzed.ResultsTotal IgE detection showed positive in all patients. 2565 (89.0%) cases presented positive to at least one kind of allergen in allergenspecific IgE detection. Of them, 1738 (67.8%) were positive to inhalation allergens, 301 were positive to food allergens (11.7%), and 526 (20.5%) to both types. The 3 top inhalation allergens in order of positivity were dust mites (including dermatophagoides pteronyssinus and dermatophagoides farinae) (68.9%), dog epithelium (37.3%) and cockroach (25.4%). The 3 top food allergens were peanut (18.3%), egg albumen (15.6%) and milk (14.3%). The strong positive rate of inhalation allergens were 66.4%, while the positive reactions were weak to the food allergens. The differences of the rates of positive and strong positive reactions between the inhalation and food allergens were statistically significant (P<0.01).ConclusionWith advantages of rapidity, simplicity, accuracy, quantification and safety, serum IgE detection can determine the types of allergens and evaluate the severity in patients with AR, and therefore, is significant for the diagnosis, treatment, evaluation and prevention of AR.