How Are Children Tested for Allergies?

Children are often more prone to allergies than adults, and they can sometimes have multiple allergies at the same time. Consequently, it’s hard for parents to identify precisely what is triggering the allergy symptoms in their kids. 

Unfortunately, figuring this out on your own can be difficult, especially when some symptoms overlap with common childhood conditions like colds or eczema. That’s why professional allergy testing is so important.

At Advanced Allergy, Asthma, & Immunology Center PA in San Antonio and Schertz, Texas, our lead allergist, Dr. Patricia Gomez-Dinger, is an expert at identifying the exact allergens affecting your child. She uses specialized testing methods that are straightforward and safe for your little ones.

Take a moment as she explains how children are tested for allergies and what the different tests involve.

Why children need allergy testing

Children who have allergies often show signs early, but without proper testing, it can be challenging to determine whether the trigger is from food, pollen, or something else in their environment. 

Sometimes, children might have multiple allergies, which complicates the situation. 

For instance, a child who has seasonal allergies could also react to dust mites or mold, and a child with eczema might also have food allergies. A professional allergy test is the most reliable way to get clarity in cases like these.

Types of allergy tests for children

Depending on their symptoms and medical history, children can be tested for allergies in several ways. The main types of tests include:

Skin prick test (SPT)

The skin prick test is one of the most common and reliable methods for testing allergies in children. This test typically identifies allergies to pollen, dust mites, pet dander, mold, and certain foods. 

A small drop of an allergen is placed on the surface of your child’s skin, usually on their forearm or back. Dr. Gomez-Dinger then uses a tiny, sterile needle to prick the skin, allowing the allergen to enter.

If your child is allergic, a small raised bump, similar to a mosquito bite, will appear within 15-20 minutes. The skin prick test is generally quick and painless, and we ensure your child is comfortable throughout the process.

Blood tests 

We recommend blood tests for children who have severe eczema or skin conditions that make skin testing difficult or for those who cannot have skin tests because of certain medications or sensitivities. 

The most common type of blood test used for allergy testing is called an IgE test, which measures the levels of immunoglobulin E (IgE) antibodies in your child’s blood. The immune system produces these antibodies in response to allergens.

Blood tests can detect various allergens, including foods, environmental factors, and insect stings. One benefit of blood testing is that it requires just a single needle prick, which may be easier for children who are anxious about skin pricks or needles. However, the results may take longer to receive than skin tests.

Elimination diet

If we suspect your child has food allergies, we might recommend an elimination diet. This type of test involves removing certain foods from your child’s diet and then reintroducing them one by one to see if symptoms return. 

The elimination diet can be a long process, but it’s also very effective for identifying food allergies that might not show up in skin or blood tests. With the guidance of our specialists, we ensure that your child still gets the nutrients they need throughout the process. 

What to expect during the allergy testing process

The process usually begins with a detailed consultation, where Dr. Gomez-Dinger reviews your child’s medical history and symptoms. She asks you about the types of reactions your child has experienced, the frequency of these reactions, and whether there’s a family history of allergies.

Depending on the type of test, your child undergoes a skin prick test, has a blood sample taken, or begins an elimination diet. The skin prick test typically ends within 30 minutes, while blood tests involve a quick visit to the lab.

In the case of a skin test, you receive results almost immediately. Findings from a blood test may take a few days. When the results are in, Dr. Gomez-Dinger goes over them with you, explaining which allergens are causing your child’s symptoms and the severity of the allergies.

Once we identify the allergens, we then create a personalized treatment plan for your child. Treatment may include avoidance strategies, medications such as antihistamines or inhalers, or possibly allergy shots (immunotherapy) if the allergies are severe.

If you suspect your child may have allergies, request an appointment with us online or call your nearest office today.