Allergy Component Testing

An Allergy Component Testing, also called as Component Resolved Diagnostics(CRD), is an advanced blood test that helps detect total IgE and specific IgE antibodies produced by the immune system. This test helps identify reactions against nearly 295 different components of allergy-causing substances (allergens) using the latest nanotechnology. In some people, the body produces IgE antibodies in response to substances like food, dust, pollen, drugs animal dander, etc. leading to allergic reactions. It is usually advised if you have allergy symptoms and elevated total IgE levels. 

An Allergy Component Testing utilizes the latest nanotechnology and artificial intelligence (AI) to detect specific IgE antibodies in response to allergen exposure. This component testing breaks down the allergen into its individual components, such as proteins, and tests for antibodies against each component separately. This comprehensive approach provides detailed information about an individual’s allergic sensitivities including identifying cross-reactive allergens and predicting the severity of allergic reactions. It can also help differentiate between allergies and sensitizations, where the immune system produces antibodies but doesn't necessarily cause symptoms. 

An Allergy Component Testing is intended to aid in the diagnosis of IgE-mediated allergic disorders using a small blood sample. It can detect specific IgE antibodies against nearly 295 allergens, including 158 food allergens, 127 respiratory allergens, and 10 contact allergens. This test provides a comprehensive IgE pattern, making it easier to identify specific allergies and allowing safe consumption of non-allergenic foods. In some cases of food allergies, IgE antibodies may not be detected because they are specific to allergens that change during cooking, processing, or digestion. Also, some food allergies are not caused by IgE antibodies but by other components of the immune system.

This test is advised if your IgE levels are elevated and you are having symptoms of allergy like nasal congestion, coughing, watery/itchy eyes, skin rashes, hives, etc. It provides clearer insights into the allergens responsible for the individual’s symptoms when other traditional allergy tests yield inconclusive or conflicting results. Additionally, the test helps differentiate between cross-reactive allergens and primary allergens in individuals with complex or multiple allergies, facilitating a more accurate diagnosis and treatment. Before starting allergy immunotherapy (allergy desensitization), doctors may also recommend this test to identify specific allergens and formulate a treatment regimen accordingly. In some cases, doctors might suggest this test to monitor the effectiveness of allergy treatment over time, assessing changes in allergic sensitivities and adjusting treatment plans as needed.

It is noteworthy that if total IgE levels are low (below the cut-off), an allergy is possible but unlikely and may show negative on the test. The levels of IgE in the blood may decrease over time due to non-exposure, so antibody tests for specific IgE antibodies may also be negative, as can be the case with insect venom tests due to undetectable levels of venom-specific IgE after long-term non-exposure. Moreover, the presence of antibodies to specific IgE may indicate allergy positivity, but it can also result from cross-reactivity to certain allergens or components. Therefore, interpreting this multi allergen test must be done in conjunction with clinical history and other diagnostic tests. 

Generally, no special preparation is required for an Allergy Component Testing. However, it is advised to inform your doctor about any medications or supplements you are taking, as they might influence your test results and the doctor may ask to discontinue them temporarily. Also, provide your detailed medical history, including history of previous allergic reactions, family history of allergies, and relevant environmental or occupational exposures to help the doctor co-relate your clinical and laboratory findings. Additionally, provide comprehensive information about your health status including any recent illnesses to ensure accurate interpretation of the test results. 

Lab test results may vary depending on factors such as age, medical history, and environmental exposure. These results necessitate expert interpretation, and therefore, it is important never to self-medicate at home solely based on them. Additionally, test results should be interpreted alongside the clinical history and other diagnostic tests. Always consult a doctor for a thorough understanding of your test results and appropriate guidance on any necessary follow-up actions or treatments.