What is immunoglobulin E in blood tests?

An immunoglobulin E (IgE) test measures the blood level of IgE, one of the five subclasses of antibodies. Antibodies are proteins made by the immune system that attack antigens, such as bacteria, viruses, and allergens. IgE antibodies are found in the lungs, skin, and mucous membranes.
 
An (IgE) immunoglobulin E test provides measures the blood level of IgE, which is one of the subclasses of antibodies.

The (IgE) blood test is done to check whether a person is allergic to a particular atmospheric element. Antibodies are proteins made by the immune system that attacks antigens, such as bacteria, viruses, and allergens.

IgE antibodies are found in the skin, lungs, and mucous membranes. They are related mainly with allergic reactions (when the immune system overreacts to environmental antigens such as pet dander, dust or pollen, that's harmless to most other people) and also parasitic infections.
 

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