Abstract
Helicobacter pylori (H. pylori) infection should be present in about half of the world's population and may be associated with peptic ulcers, gastritis, and stomach cancer. Its diagnosis can be made by non-invasive methods such as the stable isotope respiratory test of carbon (13C-UBT). Recently, a new protocol for 13C-UBT was proposed without the need to use 13C-labeled urea in the acid …