“…The test had its best accuracy (S 100%, Sp 96%) in the detection of H pylori infection at the 10‐minute mark (13). Those studies involved adult patients, but they do suggest, along with other studies, the possibility of shortening the test while maintaining its high accuracy (7,8,12). As a result, an optimized 13 C‐UBT protocol would reduce the cost of the test for both clinical use and epidemiological studies.…”