Description

An Egg White IgE Test measures the level of immunoglobulin E (IgE) antibodies in the blood that react specifically to proteins in egg whites. It helps identify egg white allergies and assess the potential severity of an allergic response.

Purpose of the Test:

  • Diagnose Egg Allergy: Confirms whether the immune system reacts to egg white proteins.
  • Assess Sensitization: Helps predict the likelihood and severity of allergic reactions.
  • Guide Treatment: Useful before starting allergy immunotherapy or planning avoidance strategies.

Why the Test Is Ordered:

  • Children or adults with symptoms of egg allergy, including:
  • Hives, swelling, or atopic dermatitis
  • Vomiting, diarrhea, or abdominal pain
  • Respiratory symptoms like asthma or rhinitis
  • Anaphylaxis in severe cases
  • Monitoring allergy progression or response to treatment.

Clinical Notes:

  • Egg whites are more allergenic than egg yolks, making this test particularly relevant.
  • Results are interpreted alongside clinical history and other allergy tests (e.g., skin prick test).
  • High IgE levels indicate sensitization, but the test alone does not predict reaction severity with complete certainty.

Preparation:

  • Fasting not required.