How to Check Allergy in Blood?
Allergies are detected in blood through specific IgE antibody tests. These tests measure the levels of Immunoglobulin E (IgE) antibodies in your blood. High IgE levels often indicate an allergic reaction. There are two main types:
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Total IgE test: This measures the overall amount of IgE antibodies in your blood. A high level suggests a potential allergy but doesn't pinpoint the specific allergen.
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Specific IgE test: This identifies the specific IgE antibodies your body produces in response to particular allergens (like pollen, peanuts, or pet dander). This is a more precise method for identifying your allergy triggers. This test measures the concentration of specific IgE antibodies in the blood.
Both tests use a blood sample to analyze IgE levels. The results help determine the presence and sometimes the specific cause of an allergic reaction. However, it's important to note that blood test results alone don't definitively diagnose allergies. A doctor will interpret these results along with your medical history and symptoms. Furthermore, a percentage of blood tests can yield false positives.
Understanding the Results
Keep in mind that:
- Blood test results need to be interpreted by a healthcare professional in conjunction with a patient's history and other allergy tests (e.g., skin prick tests).
- A positive result doesn't always mean a true allergy. False positives can occur.
- The specific allergens that cause reactions are identified through a specific IgE test.
Remember to consult with a doctor or allergist for a proper diagnosis and treatment plan based on the test results and your overall health.
