Displaying 13 results of Estriol Stable Isotopes Estriol Stable Isotopes are isotopes of the hormone estriol that have a stable atomic nucleus, meaning they do not decay over time. These isotopes are used in medical research to study the metabolism and effects of estriol in the body. They are also used in drug development and quality control to ensure accurate and consistent labeling of estriol-containing products. Estriol Stable Isotopes are valuable tools for advancing our understanding of this important hormone and its role in health and disease.