Description
The Egg White IgE Allergy with Reflex Blood Test measures the level of IgE (immunoglobulin E) antibodies in your blood in response to egg white proteins. This test helps diagnose and characterize egg white allergies, which are among the most common food allergies, especially in children.
Purpose of the Test:
- Diagnosis: The test is used to identify whether you have an allergy to egg white by measuring the presence of specific IgE antibodies.
- Characterization: It helps to determine the severity of the allergy and the likelihood of a reaction to egg whites.
- Sensitization Confirmation: The test can also be used to confirm sensitization to egg whites, which may be an important step before considering treatments like immunotherapy (allergy shots).
Symptoms of Egg White Allergy:
Egg white allergies can trigger various allergic reactions, which may include:
- Atopic dermatitis (eczema)
- Hives (urticaria)
- Angioedema (swelling of deeper layers of the skin)
- Gastrointestinal symptoms like vomiting and diarrhea
- Respiratory symptoms such as rhino conjunctivitis (runny nose and itchy eyes) and asthma
How the Test Works:
- IgE Measurement: The test measures the levels of IgE antibodies specific to egg white proteins. Elevated IgE levels suggest an allergy to egg whites.
- Reflex Testing: If high IgE levels are detected, reflex testing may be performed to further assess specific components of egg white allergens to provide more detailed information.
Fasting Not Required:
- There is no fasting required before taking the test, so you can eat and drink normally before the blood draw.
Conclusion:
The Egg White IgE Allergy with Reflex Blood Test is an important tool for diagnosing egg white allergies, particularly in children. It helps understand the allergy's severity, informs treatment decisions, and can aid in confirming sensitization prior to potential immunotherapy.
