Back to all articles

  1. Home
  2. News
  3. Health Queries Answered
  4. How Blood Tests Can Aid in Identifying Allergies

How Blood Tests Can Aid in Identifying Allergies


Blood tests are crucial for identifying allergies by measuring specific antibodies like Immunoglobulin E (IgE). These tests help pinpoint allergens, enabling the creation of effective management plans to alleviate symptoms and improve quality of life.

Blood tests are essential tools for diagnosing allergies and developing effective management plans. Here’s how they contribute:

  • Measurement of Immunoglobulin E (IgE):
    • Total IgE: Measures the overall level of IgE antibodies in the blood. Elevated levels can indicate an allergic response or atopy but are not specific to any particular allergen.
    • Specific IgE Tests (sIgE): Identifies specific IgE antibodies to individual allergens (e.g., pollen, dust mites, pet dander, certain foods). Positive results help pinpoint the exact cause of allergic reactions.
  • Advantages Over Skin Tests:
    • No Risk of Severe Reactions: Since blood tests do not involve exposing the patient to allergens, there is no risk of triggering a severe allergic reaction during the testing process.
    • Suitable for All Patients: Particularly beneficial for individuals with skin conditions like eczema or those taking medications that could interfere with skin tests.
  • Types of Allergies Identified:
    • Food Allergies: Blood tests can detect specific IgE antibodies to common food allergens such as peanuts, tree nuts, eggs, milk, and shellfish.
    • Environmental Allergies: Identifies allergens like pollen, mold, dust mites, and animal dander that contribute to allergic rhinitis and asthma.
    • Drug Allergies: Detects allergies to medications like penicillin, helping to avoid adverse reactions in the future.
    • Insect Venom Allergies: Determines sensitivity to insect stings from bees, wasps, and other insects, guiding the need for emergency action plans.

Role in Health Management:

  • Accurate Diagnosis: Blood tests provide specific and accurate identification of allergens, enabling precise diagnosis of allergic conditions.
  • Personalized Management Plans: Results guide the creation of tailored management plans, including allergen avoidance strategies, dietary modifications, and the use of medications or immunotherapy.
  • Monitoring Allergy Progression: Regular blood tests can monitor the levels of specific IgE antibodies over time, helping to assess the effectiveness of treatments and adjust management plans as needed.
  • Supporting Immunotherapy Decisions: Blood test results help determine eligibility for allergen-specific immunotherapy (allergy shots), which can reduce sensitivity to allergens over time.
  • Preventing Severe Reactions: By accurately identifying allergens, blood tests help prevent severe allergic reactions through avoidance and appropriate management strategies.


  • Non-Invasive: Blood tests are minimally invasive and can be conducted quickly with a simple blood draw.
  • Comprehensive Insight: Provides a detailed profile of an individual’s allergic sensitivities, encompassing multiple allergens.
  • Continuous Monitoring: Allows for ongoing assessment and adjustment of allergy management plans, improving long-term health outcomes.

Recommended Tests:

  1. Allergy: Allergy package






Is it Time for an ESR Test? Key Signs and Benefits

The Erythrocyte Sedimentation Rate (ESR) test is a blood test that helps detect inflammation in the body, which can be indicative of various medical conditions. Understanding when to take an ESR test is crucial for accurate diagnosis and effective treatment of conditions such as giant cell arteritis, rheumatoid arthritis, and infections. Recognizing the symptoms that warrant an ESR test ensures timely medical intervention, helping manage and mitigate potential health issues efficiently. This article will guide you through the importance of ESR testing and the convenience of getting tested through platforms like GetLabTest.com.

Read the article


Comprehensive Guide to Designing an Effective Corporate Wellness Program with GetLabTest.com

A well-designed corporate wellness program is pivotal in enhancing employee health, boosting productivity, and fostering a positive workplace culture. Such programs are not merely an additional perk but a strategic initiative that can lead to significant benefits for both employees and the organization. Improved health and well-being of employees can reduce absenteeism, lower healthcare costs, and increase overall job satisfaction, which in turn can lead to higher levels of productivity and engagement. Moreover, a strong wellness program can be a key differentiator in attracting and retaining top talent, showcasing a company's commitment to the holistic well-being of its workforce.

Read the article


10 Million on NHS Waiting Lists? Discover the Fast-Track Solution with AI Self-Pay Diagnostics

In recent years, the National Health Service (NHS) has faced mounting challenges in providing timely medical diagnostics to its patients. Lengthy wait times have become a norm, with some patients enduring weeks, or even months, to receive routine diagnostic tests such as blood tests and imaging. This delay can be attributed to a mix of factors including rising demand, staffing shortages, and finite resources. The COVID-19 pandemic exacerbated these issues, creating significant backlogs across all areas of care.

Read the article