Allergen clinical analysis for chronic idiopathic urticaria by skin prick test

Objective To analyze the results of skin test for chronic idiopathic urticaria in which standardized allergopharma fluid was used as an allergen for skin-prick testing. Methods Thirty kinds of allergopharma allergen and normal saline were used as a negative control,while histamine was used as a positive control.The testing was performed on the palmar skin in forearm,with a space of 4cm.After an allergen fluid was dropped,it was pricked vertically.After 20-30min,the testing results were analyzed. Results Of the 150 patients enrolled,91（60.7%）had positive results with a highest positive rate of house dust mite followed by flour mite. Conclusion House dust and flour mites are the most common allergens in Beijing area.