Food Allergies

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The allergen-specific IgE antibody test is a blood test used to help diagnose an allergy to a specific substance or substances for a person who presents with acute or chronic allergy-like symptoms. This is especially true if symptoms are recurrent and appear to be tied to triggers, such as exposures to particular foods or environments, and if other family members are known to have allergies.

What is an IgE antibody?

IgE is an antibody that functions as part of the body’s immune system. When someone with a predisposition to allergies is exposed to a potential allergen such as food for the first time, that person becomes sensitized. The body perceives the potential allergen as a foreign substance and produces a specific IgE antibody. With the next exposure, these IgE antibodies recognize the allergen and cause the body to release histamine and other chemicals, resulting in an allergic reaction that begins at the exposure site.

What symptoms can occur with a food allergy?

There is a variety of symptoms with food allergies with a wide range of severity. Some common symptoms are:

  • Hives
  • Itchy mouth or ear canal
  • Nausea or vomiting
  • Eczema
  • Diarrhea
  • Stomach pain
  • Trouble swallowing
  • Turning blue
  • Shortness of breath
  • Chest pain
  • Swelling of the lips, tongue or throat

What foods are being tested?

The food allergy test is looking for IgE antibodies for the following foods:

  • Almond
  • Cashew Nut
  • Codfish
  • Cow’s Milk
  • Egg White
  • Hazelnut
  • Peanut
  • Salmon
  • Scallop
  • Sesame Seed
  • Shrimp
  • Soybean
  • Tuna
  • Walnut
  • Wheat

TEST RESULTS

HOW DO I GET TESTED?

To order your own lab tests, you just need to follow these three easy steps:

  1. Complete a lab order form for your test online and print it out to take with you to the DLO Patient Service Center. Follow the instructions on the laboratory test order form if fasting is required for the testing you are ordering.
  2. Visit any DLO Patient Service Center throughout Oklahoma. Check in with our friendly staff and give them your completed order form. Full payment is due at time of service before sample collection is performed. Note that we accept all major credit cards and checks. Unfortunately, we cannot accept cash payments. Have one of our skilled phlebotomists draw a blood sample or take a urine sample, who will send your sample to our laboratory for testing.
  3. Create a MyQuest™ account and view your test results through the MyQuest online patient portal. Test results are available through MyQuest within 7-10 business days of completing your lab work.

What should I do with my results?

It is always recommended you meet with a healthcare provider to determine what your laboratory test results mean to you. Results of allergy blood testing must be interpreted with care. Even if an IgE test is negative, there is still a small chance that you have an allergy. Similarly, if the specific IgE test is positive, you may or may not ever have an actual physical allergic reaction when exposed to that substance.

If your results were positive: An elevated allergen-specific IgE result indicates that you likely have an allergy. However, the amount of specific IgE present does not necessarily predict the potential severity of a reaction. Your healthcare provider will review all of your test results and, combined with your health history, will be able to provide an accurate picture of your health status. Your healthcare provider may request additional medically-supervised allergy tests to confirm an allergy diagnosis.

If your results were negative: Negative results indicate you probably do not have a “true allergy,” an IgE-mediated response to the specific allergens tested.

WHAT OTHER RESOURCES ARE AVAILABLE TO LEARN MORE ABOUT MY HEALTH AND LABORATORY TESTS?

DLO Direct™ offers direct access to laboratory testing for informational purposes only. A DLO Direct lab test result is not a medical diagnosis and is not intended as medical advice. Only a healthcare provider can interpret lab results and diagnose a medical condition or disease.

Because tests have not been ordered by a healthcare provider, third party entities, including Medicare and Medicaid, will not reimburse for these tests.