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Allergy Insights: How Blood Tests Detect and Identify Allergens

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Living with allergies can be a daunting experience, and for many individuals, finding the root cause of their symptoms is crucial. The allergy blood test serves as a valuable diagnostic tool that aids in the identification of allergens.

We will explore the significance of allergy blood tests, their applications, how they differ from allergy skin tests, Limitations and Considerations, and what Sterling Accuris provide for allergy tests.

What is an allergy blood test?

An allergy blood test, also known as an allergen-specific IgE test, is a medical examination used to detect the presence of specific IgE antibodies in the blood. These antibodies are produced by the immune system in response to allergens, substances that trigger allergic reactions.

The test measures the levels of IgE antibodies for particular allergens, allowing healthcare professionals to determine an individual's sensitivity to those substances. By pinpointing the allergens causing the reactions, the test helps establish effective strategies for allergy management and treatment.

What is it used for?

Allergy blood tests are primarily employed to diagnose allergic conditions and identify the specific allergens responsible for an individual's symptoms. The test is particularly useful when skin prick tests are not feasible or safe for the patient.

It aids in diagnosing allergic rhinitis (hay fever), asthma triggers, food allergies, insect venom allergies, and other common allergenic triggers. Additionally, the test assists in evaluating the effectiveness of immunotherapy, a treatment method aimed at reducing an individual's sensitivity to allergens over time.

Why do I need an allergy blood test?

If you experience unexplained symptoms such as:

  • Sneezing

  • Itching

  • Hives

  • Eczema

  • watery eyes

  • Runny nose

  • Rashes

  • Gastrointestinal discomfort

An allergy blood test becomes essential to pinpoint the allergens responsible for your reactions. Moreover, if you have a family history of allergies or suspect specific triggers, the test can provide valuable insights.

Accurate diagnosis through an allergy blood test is the first step towards effective management, which may involve allergen avoidance, medication, or allergen immunotherapy to desensitize the immune system gradually.

Difference between allergy blood test & allergy skin test?

While both allergy blood tests and allergy skin tests serve the same purpose of diagnosing allergies, they differ in methodology and applications. Allergy blood tests involve analysing a blood sample in a laboratory to detect IgE antibodies, making them suitable for patients with certain skin conditions or those unable to discontinue antihistamines.

On the other hand, allergy skin tests involve applying small amounts of allergens to the skin and observing the skin's reaction, providing immediate results. The choice between the two depends on the patient's medical history, age, and other individual factors.

What does Sterling Accuris provide for allergy tests?

At Sterling Accuris, we offer a wide range of simple and efficient blood tests to help you identify specific allergens causing your allergic reactions.

Our Allergy Mix Panel test for Veg Food, Pollens, Contacts, and Drugs, allowing us to pinpoint the exact triggers. Additionally, the Accuris B Positive Allergy Panel Food, Drug, and Inhalant allergies, Allergy Milk, Allergy Panel - Asthma / Rhinitis Comprehensive, etc.

While the CRD Allergy Panel (Molecular) provides advanced molecular testing for precise results it can detect more than 290 allergens, with these tests, you can gain valuable insights into the substances you are allergic to, empowering you to take necessary precautions and seek appropriate management for a better quality of life.

Limitations & Considerations

Although blood tests are highly accurate, they are not without limitations. Elevated IgE levels do not always signify clinical allergies, as some individuals may have sensitization but no symptoms.

Moreover, the presence of specific IgE antibodies does not necessarily predict the severity of an allergic reaction. Clinical history and symptoms should always be considered alongside test results for a comprehensive diagnosis.


The allergy blood test is a vital diagnostic tool that plays a crucial role in identifying allergens and providing individuals with valuable insights into their allergies. Armed with this knowledge, patients can take necessary precautions, seek appropriate management, and ultimately improve their quality of life by effectively managing their allergies.

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