ALLERGY, GLUTEN (LASA)

The Allergy, Gluten (Lasa) Test is a specialized blood test that measures specific Immunoglobulin E (IgE) antibodies against gluten proteins. This test helps identify allergic sensitization to gluten and supports the diagnosis of wheat allergy and IgE-mediated food hypersensitivity reactions.

Gluten is a group of proteins naturally found in wheat, barley, and rye. It is commonly present in bread, pasta, biscuits, cakes, cereals, pizza, and numerous processed foods. In susceptible individuals, exposure to gluten proteins may trigger an abnormal immune response, leading to the production of specific IgE antibodies. Repeated exposure results in histamine release and allergic symptoms.

It is important to distinguish gluten allergy from celiac disease and gluten intolerance. A gluten allergy is an immediate immune-mediated allergic reaction involving IgE antibodies, whereas celiac disease is an autoimmune disorder and gluten sensitivity is a non-allergic intolerance.

The Gluten (Lasa) Allergy Test helps healthcare providers identify gluten-related allergic reactions and supports dietary modifications and allergy management.

Benefits of the Test

• Detects gluten-specific IgE antibodies
• Helps diagnose wheat and cereal allergies
• Supports evaluation of food hypersensitivity
• Assists in identifying dietary triggers
• Helps prevent allergic reactions
• Requires only a blood sample
• Supports personalized dietary management

Why Doctors Recommend This Test

Doctors may recommend this test for:

• Hives or skin rash after eating wheat products
• Mouth itching or throat irritation
• Swelling of lips, tongue, or face
• Abdominal pain, nausea, vomiting, or diarrhea
• Wheezing or breathing difficulty after meals
• Suspected wheat allergy
• Recurrent unexplained food-related 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 testing
• Inform your physician about previous food allergies 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?

• Individuals experiencing symptoms after consuming wheat-containing foods
• Children and adults with suspected food allergies
• Patients with recurrent allergic reactions
• Individuals undergoing allergy evaluation
• Patients with unexplained food hypersensitivity

Clinical Significance

Elevated gluten-specific IgE levels may indicate:

• Gluten Allergy
• Wheat Allergy
• Cereal 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 gluten-specific IgE antibodies indicates sensitization and should always be interpreted together with clinical symptoms and dietary history.