title: [Utility of "breath test" in diagnosis of digestive diseases].
abstract: The "breath test" based on the measurement of gases in expired air are an alternative to the study of metabolic and functional alterations in gastroenterology. They are classified into two groups based on the molecule analyzed and if the substrate is isotopically labelled or not: H2 and/or CH4 test (malabsorption of sugars, bacterial overgrowth, etc.) and 13CO2 test (infection by H. pylori, exocrine pancreatic function, etc.).
authors.affiliation: Servicio de Análisis Clínicos, Hospital Universitario de Guadalajara.
authors.forename: M C
authors.initials: MC
authors.lastname: Martínez Martínez
authors.forename: T
authors.initials: T
authors.lastname: Parra Cid
mesh_terms: D001944:Breath Tests; D002849:Chromatography, Gas; D003937:Diagnosis, Differential; D004066:Digestive System Diseases / Q000175:diagnosis*; D005740:Gases; D005762:Gastroenterology / Q000379:methods*; D006801:Humans
chemical_list: D005740:Gases