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Allergy - Onion (Piaz), ImmunoCAP

Also referred as

Allergen

Individual-Food Onion Piaz

Onion allergy test

For men & women

Earliest reports in

72-96 hours

Contains

1 test

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The Allergy - Onion (Piaz), ImmunoCAP test is a special allergy test that checks for immunoglobulin IgE antibodies reacting to onion proteins. It uses the ImmunoCAP method to find onion-related allergies and helps doctors create care plans to manage symptoms and prevent reactions.

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Blood

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Understanding Allergy - Onion (Piaz), ImmunoCAP

Onions are a staple in many cuisines, known for their distinctive flavor and versatility in dishes worldwide. Packed with nutrients like vitamin C, fiber, and antioxidants, onions offer various health benefits. However, some individuals can have allergic reactions to onions, causing stomach problems, skin rashes, or more serious reactions. The Allergy - Onion (Piaz), ImmunoCAP test helps diagnose an onion allergy by checking for specific antibodies (IgE) that the body makes against proteins present in onions.

The Allergy - Onion (Piaz), ImmunoCAP test is recommended when individuals experience symptoms such as itching, swelling, or discomfort in the mouth or throat, skin rashes, nausea, stomach cramps, or diarrhea after eating raw or cooked onions. It can help distinguish onion allergies from other conditions like oral allergy syndrome (OAS), a type of food allergy that causes allergic reactions in the lips, mouth, and throat upon eating certain raw fruits and vegetables.

A positive test result for onion-specific IgE antibodies means there is an ongoing onion allergy, and avoiding onions is usually recommended to prevent reactions. If the result is negative, more tests may be needed to find other causes for the symptoms, such as food sensitivities that don’t involve IgE antibodies.

No special preparation is required for the Allergy - Onion (Piaz), ImmunoCAP. Inform the doctor about any medications (such as antihistamines) or supplements being taken, as they might influence the test results.

Lab test results can vary depending on the specific test kit used, as different methods and the quality of allergens used can affect the quantification of IgE. Therefore, these results are intended to be interpreted in conjunction with clinical symptoms.

What does Allergy - Onion (Piaz), ImmunoCAP measure?

The Allergy - Onion (Piaz), ImmunoCAP test measures the presence and levels of specific IgE antibodies against onion proteins. This test helps determine whether an individual’s immune system is reacting to onions, which is essential for diagnosing onion allergies and differentiating them from other conditions like food intolerances or oral allergy syndrome.

The ImmunoCAP assay is a highly precise and reliable method that quantifies IgE antibodies, providing valuable insights into the severity of the allergic response and guiding further diagnostic and treatment decisions.

FAQs related to Allergy - Onion (Piaz), ImmunoCAP

What is the Allergy - Onion (Piaz), ImmunoCAP test?

The Allergy - Onion (Piaz), ImmunoCAP test is a diagnostic blood test that measures the immune system’s response to onions. It checks for the presence of specific immunoglobulin E (IgE) antibodies that are produced when the body mistakenly reacts to onion proteins.

Why is this test recommended?

This test is recommended if you experience allergic symptoms such as skin rashes, swelling, itching, abdominal discomfort, or respiratory issues (like sneezing or shortness of breath) after consuming onions or onion-based foods. It can help identify whether onions are the cause of your allergic reactions.

Is there any special preparation required for the test?

No special preparation is required for the Allergy - Onion (Piaz), ImmunoCAP test. However, it’s important to inform your doctor about any medications you are taking (such as antihistamines), as they can potentially affect the test results.

What does a positive result mean?

A positive result indicates that you have elevated levels of IgE antibodies specific to onions, which suggests that your immune system is sensitive to onions and you may have an onion allergy.

What does a negative result mean?

A negative result means that no specific IgE antibodies to onions were detected in your blood, indicating that onions are not likely to be the cause of your allergic reactions. However, it doesn't rule out allergies to other food allergens.

Can this test diagnose other food allergies?

No, the Allergy - Onion (Piaz), ImmunoCAP test is specific to onion allergies. For other food allergies, you would need a different allergy panel that tests for a range of other allergens.

What is the difference between an onion allergy and onion intolerance?

Onion allergy involves an immune response to proteins in onions, whereas onion intolerance usually involves digestive issues without the immune system’s involvement.

Can I eat products with onion extracts if I have an onion allergy?

If you have an onion allergy, it’s best to avoid products containing onion extracts, as they may still have allergenic proteins.

Can I prevent an allergic reaction after a positive test result?

The primary way to manage an onion allergy is to avoid eating onions and onion-based products. Your doctor may also suggest other treatments, such as medications or an allergy management plan, if you experience frequent reactions.

What is the ImmunoCAP Specific IgE Blood Test?

ImmunoCAP Specific IgE Blood Test is a specialized test that can quantitatively and accurately identify specific allergen sensitivities, i.e., identify an allergy and determine the allergen (allergy-causing substance) in people with a confirmed allergy.

How does Tata 1mg ensure accurate lab test results?

Tata 1mg ensures accurate lab test results through certified laboratories that use advanced technology and adhere to stringent quality control measures. This commitment to high standards guarantees reliable results.

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Last Updated

19th Dec 2025