What is an Allergy Blood Test?

An allergy blood test, also known as a specific IgE test or RAST (Radioallergosorbent test), is a diagnostic tool used to detect allergic reactions to various substances by measuring the presence of specific antibodies (IgE) in the blood. This test is particularly useful for individuals who cannot undergo skin testing due to certain medical conditions, severe skin problems, or the need to continue taking certain medications.

How Does the Allergy Blood Test Work?

During an allergy blood test, a small sample of your blood is drawn and sent to a laboratory for analysis. The lab tests the blood for the presence of IgE antibodies that react to specific allergens, such as pollen, pet dander, dust mites, certain foods, and more. Elevated levels of these antibodies indicate a sensitivity or allergy to the tested substances.

Why Choose an Allergy Blood Test?

The allergy blood test offers a safe and effective alternative to traditional skin tests, providing accurate results without the need for exposure to allergens. This test is especially beneficial for: