What is an Allergy Blood Test?
Allergy blood typically refers to a blood sample taken from an individual to conduct allergy testing. Allergy blood tests, also known as specific IgE blood tests or serum allergy tests, are medical tests that measure the presence of particular antibodies called immunoglobulin E or IgE in the bloodstream. The immune system produces these antibodies in response to allergens, which trigger allergic reactions.
identify allergies to specific allergens, such as pollen, mold, dust mites, pet dander, certain foods, and insect stings. The tests can help diagnose allergies and provide information about which allergens might be causing a person's allergic symptoms.
Various types of allergy blood tests are available for diagnosing allergies. The Radioallergosorbent test (RAST) is an older method that assesses IgE antibodies in response to specific allergens.
A newer technique, Component-resolved diagnostics (CRD), is also available, enabling the identification of specific proteins within allergens, thereby aiding in the precise identification of the root causes of allergies. These diverse allergy blood tests offer healthcare providers valuable tools for accurate allergy diagnosis and treatment planning.










