Allergy Testing in the United States

Around 32 million people in the United States (1) suffer from allergies. There are 26 million adults and 5.6 million children among them (2).

Allergy testing can help you figure out if your immune system reacts to certain allergens. You have an allergy if you get an allergic reaction. The majority of people seek allergy testing because they are experiencing allergy symptoms.

People with anaphylaxis should also get an allergy test because falling into anaphylactic shock can be life-threatening. Taking an allergy test also necessitates a review of your medical history in order to better determine the reason of severe reactions.

What can I do if I'm not sure if I need an allergy test?

Hay fever can occur if you are allergic to airborne particles such as pollen, pet hair, or dust. Hay fever is a common ailment that

Symptoms include:

Eyes that are itchy and watery

Throat irritation


Sneezing, nasal congestion, or a runny nose are all symptoms of allergies.

Breathing problems

Wheezing or a persistent cough

Food allergy symptoms emerge 30 to 1 hour after eating the food.

Among the signs and symptoms are:

Hives, swelling of the cheeks, lips, or tongue, and general itching

Coughing, wheeze, shortness of breath, cheats, or tightness of breath are all respiratory symptoms.

Vomiting, nausea, abdominal pain, cramps, and diarrhea are all symptoms of gastrointestinal problems.

Pale skin, a weak pulse, dizziness, or lightheadedness are all signs of a cardiovascular problem.

People who are allergic to perfumes, latex, or metals experience cutaneous reactions such as;

Swelling and hives

Blisters on the skin or a burning sensation

Itchy skin or a rash on the skin

What types of allergy testing are performed in the United States?

There are several types of allergy tests (3) that are primarily performed in the United States to assist detect which allergens your immune system reacts to. The majority of the tests listed here must be performed by your doctor, but only a blood test can be performed at home, with the sample being sent to a lab for further analysis.

Prick test on the skin

Your doctor will prick the skin of your forearm or back with possible allergens to do this test. They can also deposit droplets of those allergens on your skin and scratch it to slightly puncture it, allowing the allergens to penetrate through the skin surface.

To check for food allergies, your doctor will stick the needle into the food and prick your skin to see if you have any. Your doctor will be able to tell if you're allergic based on your reaction in 15 minutes. If you're allergic, the designated region will develop a tiny lump or turn red.

How to Get Ready for a Skin Test

For the five days leading up to the test, avoid any antihistamines and sleep aids that may contain antihistamines. Antihistamines have the disadvantage of masking positive skin prick test results, rendering the results untrustworthy.

Intradermal examination

If the skin prick test is inconclusive, you can have this test done. It entails injecting allergens into your epidermis in microscopic doses. This test looks for insect sting allergies, as well as allergies to airborne irritants and medicines.

An intradermal test can also be used to identify allergy reactions that aren't as severe. This injection is unpleasant and has the potential to trigger more severe allergic reactions. Within 15 minutes, you'll have the results of this exam.

Test a patch

This test is primarily for allergies that manifest one and a half to three days following exposure to allergens. The following are examples of triggers:



Condoms or gloves


Your skin will most likely react the same way it does when inflamed with contact dermatitis if you have a contact allergy. The skin swells up, becomes red, and itches. Small blisters may also appear.

The test is putting drops of allergen on your arm's skin and covering it with a bandage. Within 48-96 hours, you can depart with the dressing and return to your doctor's office. After your doctor removes the patch, the findings will be read within 2 to 5 days. Your doctor may be able to read it ten days after it has been removed. If your doctor has placed a waterproof cover over the patches, avoid contact with moisture while wearing them.

IgE blood test

Because skin testing can sometimes induce severe reactions, a blood test is recommended. Additionally, the results of your skin prick test may be influenced by a skin illness. This is the most common and straightforward test. You can even get the test kit online and complete it from the convenience of your own home. After you've received the test kit, you'll need to take your blood sample as directed and return it back to the lab along with your medical history.

The doctor will test the IgE antibodies after adding allergens to the blood sample. After receiving your results, you can discuss your options with your doctor. Blood testing can also be used to look into other immune system issues such as hives, swelling episodes, and primary immunodeficiency disorders. Smoking or a parasite infection are two things that can affect a blood test.

Test for a challenge

Because this test is a little dangerous, it takes place in a doctor's office. During this test, you will be required to ingest small amounts of allergens while the doctor monitors and prepares to assist you if anaphylaxis occurs.


Allergy testing is common in the United States, given the large number of people who suffer from allergies. If you're experiencing the signs of an allergic reaction, you should obtain an allergy test to figure out what your body is reacting to. Also, if you're not sure if you have an allergy or intolerance, you can take a test to discover which one you have and which allergens are causing it. Because of the severity, an allergy and an intolerance (4) are very distinct. Allergies are dangerous and can even be fatal.

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125 thoughts on “Allergy Testing in the United States

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