Frequently Asked Questions About Blood Testing for Allergic Triggers

Curious about blood testing for allergies? Explore answers to some of the most common questions.

This quick and simple blood test measures the amount of allergen-specific antibodies in your blood (IgE), which is an indicator of allergic sensitization. It can test for hundreds of allergic triggers and can be administered to people of any age (including young children). As a powerful diagnostic tool, a specific IgE blood test can help your healthcare provider determine if you have allergies and aid in identifying which allergens are causing your symptoms.

You can be tested for just about anything you encounter that can cause allergy symptoms. A blood test can be used to identify sensitizations to pollens, molds, animal dander, foods, dust mites, insect venoms, some medications, and more. 

Unlike a skin-prick test, a blood test can be performed on those with skin conditions (e.g., eczema) and on individuals currently on medications, including antihistamines. This blood test is also considered safe for those who are pregnant. Explore more benefits.

Anyone experiencing allergy-like symptoms can undergo specific IgE blood testing. For babies and young children, one blood sample collection is often less traumatic than the several scratches of a skin-prick test.  

A small sample of blood is drawn and sent to a laboratory for analysis. The results are returned a few days later for your healthcare provider to interpret alongside your medical history and reported symptoms. This combination may help your healthcare provider confirm or rule out a suspected allergy. 

The first step is to speak with a healthcare professional about your symptoms and concerns. Any healthcare provider can order specific IgE blood testing. But for a more informative appointment, answer our series of questions and then review your answers with your healthcare provider during your office visit. 

Since the blood sample is sent to a lab for processing, it typically takes a few days to obtain blood-test results.  

Most health insurance plans, including Medicare and Medicaid, cover specific IgE blood testing. For more specific information, contact your insurance company or explore provider options for associated costs if you do not currently have health insurance.  

While costs may vary according to lab fees and your health insurance, they also can be dependent on the number of allergens tested. Contact your healthcare provider, insurance provider, and/or testing facility for pricing information.

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