Understanding Lab Tests for Allergic Reactions
Written by Private MD Labs Medical Writing Team • Last Updated: September 8, 2025
Allergic reactions occur when the immune system overreacts to normally harmless substances called allergens. While allergic reactions are often diagnosed through clinical observation and patient history, blood tests play a crucial role in identifying specific allergens and monitoring the body's immune response.
Top Recommended Test
Post COVID-19 Expanded Panel
This comprehensive panel includes eosinophil count measurement. Eosinophils are white blood cells that increase significantly during allergic reactions as they respond directly to allergens. Elevated eosinophil levels can help confirm an allergic response and monitor its severity.
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How Blood Tests Help with Allergic Reactions
Blood tests for allergies work by measuring specific immune system markers and antibodies that indicate allergic responses. These tests can help identify particular allergens triggering reactions and assess the severity of the immune system's response, providing valuable information for treatment and avoidance strategies.
Other Relevant Tests
Phoma betae IgG
This specific test measures IgG antibodies against Phoma betae fungus, indicating exposure and potential allergic sensitivity. Elevated levels suggest an allergic response to this environmental fungus, which can cause respiratory symptoms, skin reactions, and in severe cases, anaphylactic responses.
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Understanding Your Results
Blood test results for allergic reactions help healthcare providers understand which specific substances trigger your immune system and how strongly your body responds. This information is essential for developing effective treatment plans and allergen avoidance strategies.
Important Considerations
The information here is for educational purposes only and is not a substitute for professional medical advice. Always consult with a healthcare provider for diagnosis and treatment of allergic reactions.
