Displaying 19 results of Thyroxine Stable Isotopes Thyroxine stable isotopes are non-radioactive isotopes of the hormone thyroxine, which plays a critical role in regulating metabolism and growth. These isotopes are used in research to study the metabolism and turnover of thyroxine in the body. They are also used in clinical assays to measure levels of thyroxine in patient samples, providing a more accurate and reliable diagnosis of thyroid disorders. The stable nature of these isotopes makes them safe to use in both research and clinical applications.