Breath TestsAcetoneHelicobacter InfectionsHelicobacter pyloriUreaCarbon IsotopesGastric EmptyingLactuloseAminopyrineCaprylatesHydrogenLactose IntoleranceExhalationAnti-Ulcer AgentsCarbon RadioisotopesDyspepsiaOmeprazoleClarithromycinCarbon DioxideAmoxicillin2-PyridinylmethylsulfinylbenzimidazolesBismuth2-PropanolUreaseGastrointestinal TransitTinidazoleMetronidazoleChylomicron RemnantsLactose Tolerance TestLansoprazoleMalabsorption SyndromesLiver Function TestsFalse Negative ReactionsSensitivity and SpecificitySulfoxidesPeptic UlcerAcetamidesDuodenal UlcerDrug Therapy, CombinationPentanesAnti-Bacterial AgentsSpectrophotometry, InfraredGastroparesisFurazolidoneIntestine, SmallBlind Loop SyndromeRanitidineRabeprazoleIleocecal ValveLactoseProton Pump InhibitorsGastroscopyStomachAntitrichomonal AgentsBreath HoldingMineral WatersSpirulinaLoperamideExocrine Pancreatic InsufficiencyIrritable Bowel SyndromeGastritisMethaneEndoscopy, GastrointestinalRespirationSteatorrheaVolatile Organic CompoundsAcetoacetatesDihydropyrimidine Dehydrogenase DeficiencyPhenolsulfonphthaleinPancreatinChromatography, GasSolventsButanonesFecesGastrointestinal MotilityPropanthelineReproducibility of ResultsAcetic AcidTime FactorsFlatulenceGlutethimide1-PropanolDiphenoxylateMucositisXanthobacterIntestinal DiseasesGastrointestinal AgentsLiver CirrhosisAchlorhydriaRespiratory MechanicsBenzimidazolesVolatilizationTrioleinProspective StudiesAntacidsEthanolPancreatic ExtractsIntestinal AbsorptionEthaneMass Spectrometry