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Safe & Informative Food Allergy Testing

Whether it be for safety, relief or any other reason, we’re here to help answer your questions and guide you through the process.

Adult & Pediatric Allergy Testing Services

At Texan Allergy & Sinus Center, we can test and treat common food allergies in children as young as 4 months. We offer food allergy testing at all of our clinics.

Options for food allergy testing include:
- Skin testing
- Blood testing
- Oral Food Challenge

Child and father cooking

Symptoms of Food Allergies

Food allergy symptoms can range from minor to life-threatening.

Symptoms Include:
- Anaphylaxis
- Mouth itching
- Hives
- Swelling of the lips or mouth or other parts of the body
- Immediate nausea, vomiting and/or delayed diarrhea
- Asthma symptoms (wheezing, shortness of breath)

In cases of anaphylaxis, 90% are caused by peanuts or other nuts.

Nearly 90% of food allergies are caused by one of the 8 following food allergies.

  • Peanuts
  • Soybean
  • Tree Nuts (Almonds, Cashews, Hazelnut, Macadamia, Pecans, Pistachios, Walnuts)
  • Fish
  • Shellfish
  • Wheat
  • Egg
  • Milk

Skin Testing for Food Allergies

Skin tests involve lightly pricking the skin with a tiny drop of the liquid food allergen. This is not painful. Some patients even think it tickles!

After about 20 minutes, we’re able to see the results by measuring the reaction on the skin. This can range from just a bit of redness to a raised “mosquito bite” looking bump. A raised bump generally indicates an allergic reaction and that treatment may be necessary.

Blood Testing for Food Allergies

Daughter and patient meeting

Food allergy blood testing detects and measures the amount of allergen-specific antibodies in your blood. Test results are usually available in 1-2 weeks. An outside lab tests the blood sample and sends the results to our specialists at Texan Allergy & Sinus Center

Oral Food Challenge

An oral food challenge may be recommended if results from a skin or blood test are uncertain. During this process, you’ll eat or drink small portions of a food in increasing amounts over a period of time to see if an allergic reaction occurs. This is always done under a doctor’s supervision.

While skin and blood testing are both ways to test for food allergies, oral food challenges are known as the “gold standard” for diagnosing food allergies.

What to Expect During the Oral Food Challenge

Supervision – All food challenges are done at Texan Allergy & Sinus Center clinics and are conducted by a board-certified physician who has been trained to manage oral food challenges and extensive food allergy therapy. 

Safety –
 Emergency medications (including epinephrine, antihistamine and other emergency medications) will all be on hand and ready to be used, if needed.

Incremental doses –
 At the start of the challenge you’ll be given a very small, measured amount of the allergen and observed closely. If no symptoms develop after 20 minutes, then another, slightly larger amount of the food will be given. This process will be repeated over the course of about three to four hours. The goal is to work up to a full serving size of the food you’re allergic to.

Click here for more information about Oral Food Challenges.

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