PREPARATIONS FOR MEASRUING GASTRIC PH VALUE AND METHOD OF MEASURING GASTRIC PH VALUE BY USING THE SAME

摘要

Preparations whereby gastric pH value can be conveniently and noninvasivelymeasured, for example, preparations whereby gastric pH value can be measuredby using expiration. These preparations can be obtained by coating acomposition containing a compound labeled with an isotope (13C, 14C, 15N, 18O,etc.) with a base having a pH-dependent solubility.