Stool antigen test. A small sample of one's stool is gathered and sent to some lab. In 2 or 3 times, the exam will clearly show if you have H. pylori. Also, with advancing age, the pylorus (the valve between the belly and duodenum) relaxes and makes it possible for additional https://www.sgvascularctr.com/do-i-need-chronic-leg-ulcer-treatment-in-singapore/