All subjects were initially screened for H. pylori infection by 13 C-UBT after an overnight fast. Those subjects determined to be H. pylori-positive were requested to undertake the 13 C-UBT on ...

we aimed to determine the cutoff value and evaluate the diagnostic accuracy of the 13 C-UBT with UBIT ( 13 C-urea; Otsuka Pharmaceutical, Tokushima, Japan) reagent using an UBiT-IR200 infrared ...