The<unk>  is a medical test in which<unk> -containing foods are consumed and (re-)occurrence of symptoms is observed afterwards to determine whether and how much a person reacts to these foods. The test may be performed in people with suspected<unk> -related disorders in very specific occasions and under medical supervision, for example in people who had started a<unk> -free diet without performing duodenal biopsy.<unk><unk>  is discouraged before the age of 5 years and during pubertal growth.<unk><unk>  protocols have significant limitations because a symptomatic relapse generally precedes the onset of a serological and histological relapse, and therefore becomes unacceptable for most patients.
Gluten challenge test
Salicylate testing
Hydrogen breath test
Sweat test
Urea breath test
Erythromycin breath test
Schilling test
Rapid urease test