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Are at-home food sensitivity tests accurate? Here's what to know before you buy one of these food intolerance test kits.
The antigen leukocyte antibody test (ALCAT test) is one that claims to measure adverse reactions to dietary substances. It was created by American Medical Testing Laboratories and is now marketed by Cell Science Systems (also known as ALCAT Diagnostic Systems) of Deerfield Beach, Florida .
Nima reports accuracy as the ability to detect gluten in samples of food at 20ppm and above, and to detect peanut in samples of food at 10ppm and above. Nima reports above 97% accuracy when comparing the performance of gluten and peanut detection to the leading food diagnostic lab ELISA tests for traces of gluten at the range of 20ppm and above ...
Food intolerance is a detrimental reaction, often delayed, to a food, beverage, food additive, or compound found in foods that produces symptoms in one or more body organs and systems, but generally refers to reactions other than food allergy. Food hypersensitivity is used to refer broadly to both food intolerances and food allergies.
In a hydrogen breath test, the most accurate lactose intolerance test, after an overnight fast, 25 grams of lactose (in a solution with water) are swallowed. If the lactose cannot be digested, enteric bacteria metabolize it and produce hydrogen, which, along with methane, if produced, can be detected on the patient's breath by a clinical gas ...
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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