Serving Katy & Greater Houston area


Millions of people around the world suffer from different types of allergies. The reason why do allergies occur is that your immune system reacts to some food items or foreign substances e.g. pollen, animal dander, dust mites, and mold. Allergies vary in severity from person to person and can range from moderate discomfort to potentially life-threatening conditions.

What is an allergy test?

An allergy test is typically performed through the examination of skin or blood to diagnose if you are allergic to something particular or not. Allergy tests are not adequate in most cases, if your physical and medical history indicates that you are allergic to something, allergy tests may be helpful in determining what you are allergic to.

How do you prepare for an allergy test?

Before you undergo skin or blood tests, it is necessary to have a discussion with your doctor about your lifestyle, family history, and symptoms that you may have observed. Typically, you will be directed to stop taking medications for a while.

What does an allergy test do?

Allergy tests identify your body’s reaction to certain allergens or allergy triggers. Your immune system overreacts in the form of skin irritation, nasal congestion, watery eyes, headache, and sore throat. Allergy tests confirm either you are allergic to something or not, if yes, you would know what exactly you are allergic to.

What are the types of allergy tests?

There are different types of allergy tests, your doctor will opt for the best method based on your symptoms and the suspected allergens. Some of these tests are:

  • Intradermal Skin Test

Intradermal skin test checks for allergies to airborne irritants, medications, and insect stings. For this purpose, your medical help injects small amounts of the allergen into the outer layer of your skin.

  • Patch Test

Patch test determines the cause of contact dermatitis. In this test, your doctor places drops of an allergen onto the skin on your arm and covers the area with a bandage for 48 to 96 hours to check your skin for a rash or other reaction.

  • Blood Test

It is a typical blood test in which your doctor sends a sample of your blood to a lab for an IgE test. The lab tests the amount of IgE antibodies in the blood sample by adding allergens to it.

What can be the risk of an allergy test?

An allergy test has a slight probability of causing a serious allergic reaction that needs medical attention. The Medical Office of Katy is always prepared to handle such allergic response if it occurs at our office however if the reaction happens after you have left our office, you should immediately call emergency.