What is Allergy Blood Testing?
What is allergy blood testing?
Allergy blood testing, also known as allergen specific IgE testing or allergy serology, is a medical procedure used to diagnose allergies. It involves analyzing a blood sample to measure the levels of immunoglobulin E (IgE) antibodies specific to particular allergens.
Here's an overview of how allergy blood testing works:
Consultation: You first visit a healthcare professional, typically an allergist or immunologist, who will review your medical history, symptoms, and suspected allergens. They will determine if allergy testing is necessary and appropriate for you.
Blood sample collection: During the testing appointment, a small sample of your blood is drawn. Usually, a nurse or phlebotomist collects the blood from a vein in your arm using a needle and a syringe or a specialized collection tube.
Laboratory analysis: The blood sample is sent to a laboratory where it is tested for specific IgE antibodies. The laboratory uses various techniques, such as enzyme-linked immunosorbent assay (ELISA) or fluorescent enzyme immunoassay (FEIA), to detect and quantify the IgE antibodies in your blood.
Allergen panel: The laboratory analyzes your blood for specific allergens that are suspected to be causing your allergic symptoms. The allergens tested can vary depending on your medical history and suspected triggers. Common allergens include pollen, dust mites, pet dander, mold, certain foods, and insect venom.
Results interpretation: Once the laboratory analysis is complete, the results are sent back to your healthcare provider. They will interpret the results, taking into account your medical history and symptoms, to determine if you have specific allergies and which allergens you are allergic to.
Allergy blood testing is often used when skin prick testing (another common allergy diagnostic method) is not feasible or if the individual has a condition that may interfere with skin testing, such as severe eczema or certain medications that cannot be stopped temporarily.
It's important to note that allergy blood testing is just one part of the diagnostic process. Your healthcare provider will consider your complete clinical picture, including your medical history and symptoms, to make an accurate diagnosis and develop an appropriate treatment plan for your allergies.