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For an allergy blood test, a sample of the patient's blood is sent to a laboratory for analysis. Allergy blood tests measure the presence of IgE antibodies to specific foods, pollens, mites, animals, insects and other environmental factors. (IgE, short for "immunoglobulin E", is the antibody that triggers food allergy symptoms.)
Nima is a portable food sensor designed to enable individuals with food allergies and sensitivities to test their food for specific proteins. Nima created and leads the category of consumer food testers. The first product, a gluten sensor, was released in for general availability in February 2017.
Curex provides allergy diagnosis services and facilitates IgE allergy testing with ImmunoCAP, an FDA-cleared technology, which requires a blood draw at home by a phlebotomist or in a lab. Additionally, Curex offers IgE blood testing using self-administered, CLIA-certified test kits. [4] [10] [11]
The RAST is a radioimmunoassay test to detect specific IgE antibodies to suspected or known allergens for the purpose of guiding a diagnosis about allergy. [10] [11] IgE is the antibody associated with Type I allergic response: for example, if a person exhibits a high level of IgE directed against pollen, the test may indicate the person is allergic to pollen (or pollen-like) proteins.
It has also found applications in the food industry in detecting potential food allergens, such as milk, peanuts, walnuts, almonds, and eggs [27] and as serological blood test for coeliac disease. [28] [29] ELISA can also be used in toxicology as a rapid presumptive screen for certain classes of drugs. Enzyme-linked immunosorbent assay plate
Food allergy is principally diagnosed by careful history and examination. When reactions occur immediately after certain food ingestion then diagnosis is straight forward and can be documented by using carefully performed tests such as the skin prick test and the radioallergosorbent test RAST to detect specific IgE antibodies to specific food proteins and aero-allergens.
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