Allergy Blood Test

Allergies can be frustrating, uncomfortable, and even life-threatening in severe cases. Identifying the allergens that trigger your symptoms is the key to effective allergy management, and a blood test for allergies can be an important tool in this process.

We on AZ allergy Associates only do the Immunoglobulin E (IgE) – specific immuno assay methods on testing blood for allergy.

What is an IgE allergy blood test?

The IgE allergy blood test is a type of blood test that measures the levels of immunoglobulin E (IgE) antibodies in the blood. IgE antibodies are produced by the immune system in response to exposure to specific allergens, such as pollen, dust mites, or animal dander.

What to expect with your allergy blood test?

Blood tests are not performed in office. If a blood test is necessary we will send you to a local Sonora quest or Lab Corp to have the testing done.

During the test, a healthcare provider will draw a blood sample from a vein in your arm using a small needle. After the needle is inserted, a small amount of blood will be collected into a test tube or vial. You maybe feel a little sting when the needle goes in or out. This usually takes three to five minutes.

The blood sample taken from the patient’s arm will be sent to a laboratory for analysis. The lab will measure the levels of IgE antibodies in the blood and compare them to the normal range of IgE levels. If the levels of IgE antibodies are elevated, it may indicate an allergy to one or more specific allergens. It is important to note that the test results should always be interpreted in the context of the patient’s symptoms and medical history.

Why is it important?

The blood test for allergies is used to identify the specific allergen that triggers an allergic reaction. The test is often recommended for people who have symptoms of allergies, such as sneezing, itching, and hives, but whose symptoms cannot be explained by other medical conditions.

The test can also be used to:

  • Confirm a suspected allergy

  • Monitor the effectiveness of allergy treatment

  • Identify potential allergens before starting allergy treatment

Will I need to do anything to prepare for the test?

None. You don’t need any special preparations for the test. Fasting isn’t required.

FAQ’s

  • Blood allergy tests are generally considered to be a reliable and accurate method of identifying allergies. The accuracy of a blood allergy test can vary depending on the specific type of test being performed, the allergen being tested for, and the laboratory conducting the test.

    There are two main types of blood allergy tests: the IgE antibody test and the IgG antibody test. The IgE antibody test is the most commonly used test for allergies and is considered to be highly accurate. It measures the level of IgE antibodies in the blood, which are produced by the immune system in response to allergens.

    The IgG antibody test, on the other hand, is less commonly used for allergy testing and its accuracy is more controversial. It measures the level of IgG antibodies in the blood, which are also produced by the immune system in response to allergens.

  • The cost of a blood allergy test can vary depending on a variety of factors, such as the type of test, the allergens being tested, the geographic location of the lab, and the healthcare provider or insurance plan used. In the United States, the cost of a blood allergy test without insurance can range from approximately $200 to $1,000 or more, depending on the number of allergens being tested. However, many insurance plans will cover some or all of the cost of allergy testing, so it is important to check with your insurance provider to determine your specific coverage.

  • Yes, antihistamines can affect the results of blood allergy testing. Antihistamines block the effects of histamine, which is a chemical released by the immune system during an allergic reaction. Blood allergy tests measure the number of antibodies present in the blood against specific allergens, and antihistamines can interfere with the accuracy of the test results by reducing the amount of histamine released and the body’s allergic response.

  • Yes, it is generally recommended that you stop taking antihistamines before an allergy blood test. Antihistamines can interfere with the accuracy of the test results by reducing the amount of histamine released and the body’s allergic response.

    The length of time that you need to stop taking antihistamines before testing can vary depending on the specific type of antihistamines and the individual’s health status. It is important to talk to your healthcare provider before stopping any medication, including antihistamines. We may recommend stopping antihistamines anywhere from 3 to 10 days prior to the test, depending on the type of antihistamine and the specific test being performed.

    If you are unsure whether or not you should stop taking antihistamines before an allergy blood test, you should speak with your doctor who ordered the test to determine the best course of action.

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