The 14 food allergens reference values will vary depending on the measurement method, usually the standard reference value is negative or 0-0.35 IU/ml. Food allergens are components of food that can cause an abnormal reaction of the body’s immune system. Measurement is usually performed by immunoblotting. It is usually expressed as a negative-positive and less frequently as a quantitative value. The results may vary depending on the hospital’s testing equipment, and the reference values on the test forms can be consulted. Common food allergens include peanuts, soybeans, milk, shrimp and mango. If an allergy to a particular food or group of foods is identified during the measurement, it is necessary to avoid that food in order to avoid serious consequences. It is important to note that food allergy is a very complex immune system reaction to food, and should not blindly listen to the rumor that it can be improved by eating more. If you accidentally consume an allergic food, you should seek immediate medical attention and follow the doctor’s instructions for medication.