Breath TestsKetonesKetone BodiesHelicobacter InfectionsHelicobacter pyloriUreaCarbon IsotopesGastric EmptyingLactuloseAminopyrineCaprylatesHydrogenLactose IntoleranceAnti-Ulcer AgentsExhalationCarbon RadioisotopesDyspepsiaOmeprazoleClarithromycinAmoxicillin2-PyridinylmethylsulfinylbenzimidazolesCarbon DioxideBismuthMethyl n-Butyl KetoneTosyllysine Chloromethyl KetoneUreaseTosylphenylalanyl Chloromethyl KetoneGastrointestinal TransitAcetoacetatesTinidazoleMetronidazoleChylomicron Remnants3-Hydroxybutyric AcidLactose Tolerance TestLansoprazoleMalabsorption SyndromesLiver Function TestsFalse Negative ReactionsSulfoxidesPeptic UlcerAcetamidesDuodenal UlcerSensitivity and SpecificityDrug Therapy, CombinationHydroxybutyratesGastroparesisFurazolidoneAnti-Bacterial AgentsIntestine, SmallBlind Loop SyndromeRanitidineAmino Acid Chloromethyl KetonesRabeprazoleSpectrophotometry, InfraredIleocecal ValveLactosePentanesProton Pump InhibitorsGastroscopyStomachMethaneAntitrichomonal AgentsBreath HoldingMineral WatersAcetoneSpirulinaLoperamideExocrine Pancreatic InsufficiencyIrritable Bowel SyndromeGastritisEndoscopy, GastrointestinalSteatorrheaDihydropyrimidine Dehydrogenase DeficiencyPhenolsulfonphthaleinPancreatinFecesGastrointestinal MotilityPropanthelineVolatile Organic CompoundsRespirationKetosisFlatulenceGlutethimideDiphenoxylateReproducibility of ResultsTime FactorsMucositisIntestinal DiseasesGastrointestinal AgentsLiver CirrhosisAchlorhydriaAcetic AcidRespiratory MechanicsBenzimidazolesTrioleinProspective StudiesAntacidsPancreatic ExtractsIntestinal AbsorptionBiliopancreatic Diversion