This test measures the amount of Immunoglobulin E (IgE) in the blood. Immunoglobulin E is a type of antibody produced by the body during an allergic reaction. IgE levels are normally very low. During exposure to an allergen, the immune system of the allergic person creates IgE which triggers typical allergy symptoms such as red itchy skin, runny nose, itchy eyes and difficulty breathing. Measuring IgE levels can help determine if a person may have an allergic disease including asthma although it cannot identify a specific allergen. IgE can also be elevated when a person has a parasitic infection.
A Total IgE test is typically ordered when a person is experiencing symptoms associated with a parasitic infection or allergic reaction, especially if they do not know what they may be allergic to. The test is usually taken shortly after or while someone is experiencing symptoms such as persistent itching, hives, itchy eyes, nausea, vomiting, diarrhea, sneezing, coughing, congestion or difficulty breathing. This test is usually accompanied by or followed with testing for specific allergens.
Turnaround for this test is typically 1-3 business days.
Note: Result turn around times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.
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