Are there any non-radioactive tests for diagnosing H. pylori?
Blood tests and breath tests exist which are non-radioactive. These test are less convenient and usually more expensive than the radioactive test. The C14 Urea Breath Test described in these web pages is such a low dose that it is no worse that spending an hour on an aeroplane or 24 hours of background radiation so there is no logical reason for concern about it.