Allergy Blood Test – Purpose, Procedure & Results

An allergy blood test is a test that measures the level of IgE antibodies in the blood. IgE antibodies are produced by the immune system in response to allergens, such as pollen, pet dander, or certain foods.

Purpose:

The allergy blood test is used to:

• Diagnose allergies
• Determine the specific allergens that a person is allergic to
• Monitor the effectiveness of allergy treatment

Preparation:

There is generally no special preparation required for the allergy blood test. However, the healthcare provider may ask the person being tested to avoid taking certain medications that could affect the test results.

Procedure:

The allergy blood test is performed as follows:

1. A healthcare provider will draw a blood sample from a vein in your arm.
2. The blood sample will be sent to a laboratory for analysis.

Normal range:

The normal range for IgE antibodies in the blood varies depending on the specific laboratory, but generally falls within the range of 0 to 100 international units per milliliter (IU/mL).

Results:

The results of the allergy blood test will be available within a few days. The healthcare provider will interpret the results and determine if further testing or treatment is necessary.

Risks:

There are minimal risks associated with the allergy blood test. Some people may experience minor bleeding or bruising at the puncture site, or may feel dizzy or faint after the blood draw.

It’s important to follow the recommended treatment and monitoring guidelines for allergies and to inform your healthcare provider of any symptoms you may be experiencing. Early diagnosis and treatment can help reduce the risk of complications and improve quality of life.