The specific cost of allergen testing is related to a variety of factors such as testing items, testing equipment, testing reagents, etc., while there are geographical differences, generally around several hundred dollars, it is recommended that the specific price reference to the local hospital. Generally in large tertiary hospitals to carry out allergen testing, including serum immunoglobulin E test, patch test and other reagents and instruments used are imported, so the cost will be relatively higher. Some smaller hospitals generally use domestic instruments and equipment, so the cost will be relatively lower. If allergy occurs, it is recommended to go to a regular hospital for allergen testing in time to identify the allergen or screen the cause of allergy.