ALLERGY, EGG WHITE (ANDA)

The Allergy, Egg White (Anda) Test is a specialized blood test that measures specific Immunoglobulin E (IgE) antibodies against proteins present in egg white. This test helps identify allergic sensitization to egg white and supports the diagnosis of egg allergy and IgE-mediated food hypersensitivity reactions.

Egg white contains several allergenic proteins, including ovalbumin, ovomucoid, ovotransferrin, and lysozyme, which are common triggers of food allergies. Egg allergy is one of the most frequent food allergies in infants and children, although it can also affect adults. Reactions may occur after consuming eggs directly or foods containing egg proteins, such as cakes, bakery products, sauces, noodles, and processed foods.

In susceptible individuals, the immune system mistakenly recognizes egg proteins as harmful substances and produces specific IgE antibodies. Repeated exposure leads to histamine release and inflammatory responses, causing symptoms involving the skin, digestive system, respiratory tract, and cardiovascular system.

The Egg White (Anda) Allergy Test helps healthcare providers determine whether egg proteins are responsible for allergic symptoms and assists in developing dietary recommendations and allergy management strategies.

Benefits of the Test

• Detects egg white-specific IgE antibodies
• Helps diagnose egg allergy
• Supports evaluation of food hypersensitivity
• Assists in identifying dietary triggers
• Helps prevent severe allergic reactions
• Requires only a blood sample
• Supports personalized allergy management

Why Doctors Recommend This Test

Doctors may recommend this test for:

• Skin rash or hives after eating eggs
• Mouth itching or throat irritation
• Lip, tongue, or facial swelling
• Abdominal pain, nausea, vomiting, or diarrhea
• Wheezing or breathing difficulty
• Suspected food allergy in children
• Recurrent unexplained allergic reactions

Preparation Before Test

Sample Required

• Peripheral venous blood sample

Preparation Guidelines

• No fasting is required
• Antihistamines generally do not interfere with blood IgE tests
• Inform your physician about previous allergic reactions and dietary history
• Follow laboratory instructions before sample collection

Reporting Time

Results are generally available within 3–7 working days, depending on laboratory methodology.

Who Should Take This Test?

• Infants and children with suspected egg allergy
• Adults experiencing symptoms after consuming eggs
• Individuals with recurrent food-related allergic reactions
• Patients undergoing food allergy evaluation
• Individuals with eczema or atopic conditions associated with food allergies

Clinical Significance

Elevated egg white-specific IgE levels may indicate:

• Egg White Allergy
• Egg Protein Allergy
• Food Hypersensitivity
• IgE-Mediated Food Allergy

Common symptoms may include:

• Mouth itching
• Hives and skin rash
• Swelling of lips, tongue, or face
• Abdominal pain
• Nausea and vomiting
• Diarrhea
• Wheezing
• Shortness of breath
• Severe allergic reactions including anaphylaxis

The presence of egg white-specific IgE antibodies indicates sensitization and should always be interpreted together with clinical symptoms and dietary history.