Antigens for Allergies - IVD Raw Materials

Introduction

An allergen is a type of antigen that produces an abnormally vigorous immune response in which the immune system fights off a perceived threat that would otherwise be harmless to the body. Such reactions are called allergies. The first time a person is exposed to an allergen, they do not usually experience a reaction. It often takes time for the immune system to build up a sensitivity to the substance. In time, the immune system learns to recognize and remember the allergen. As it does so, it starts making antibodies to attack it when exposure occurs. This buildup is called sensitization. Allergy symptoms can affect the human airways, sinuses and nasal passages, skin, and digestive system. Allergic reactions can range from mild to severe. In some severe cases, allergies can trigger a life-threatening reaction known as anaphylaxis.

Types of Allergens

Many different types of allergens can trigger an allergic reaction, a very broad range of substances also can be allergens to sensitive individuals. The types of allergies including food allergies, drug allergies, insect allergies, latex allergies, mold allergies, pet allergies, pollen allergies and other allergies. An allergic reaction can be caused by any form of direct contact with the allergen—consuming food or drink, breathing in pollen, perfume or pet dander, or brushing a body part against an allergy-causing plant. In the U.S, the most common causes of food allergy are these eight foods: Milk, egg, peanut, tree nut, soy, wheat, fish, shellfish. Other common causes of serious allergy are wasp, fire ant and bee stings, penicillin, and latex.

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