Chylomicron RemnantsBreath TestsSpirulinaCarbon IsotopesIsotopesIsotope LabelingHelicobacter InfectionsHelicobacter pyloriUreaGastric EmptyingLactuloseNitrogen IsotopesOxygen IsotopesAminopyrineHydrogenCaprylatesLactose IntoleranceCarbon RadioisotopesAnti-Ulcer AgentsExhalationDyspepsiaOmeprazoleClarithromycinCarbon DioxideAmoxicillin2-PyridinylmethylsulfinylbenzimidazolesBismuthUreaseGastrointestinal TransitZinc IsotopesTinidazoleMetronidazoleLactose Tolerance TestLansoprazoleMalabsorption SyndromesSulfur IsotopesLiver Function TestsFalse Negative ReactionsDeuteriumSensitivity and SpecificitySulfoxidesPeptic UlcerAcetamidesDuodenal UlcerIron IsotopesDrug Therapy, CombinationIntestine, SmallGastroparesisFurazolidoneAnti-Bacterial AgentsBlind Loop SyndromeSpectrophotometry, InfraredRanitidineMass SpectrometryRabeprazoleMethaneIleocecal Valve