Displaying 1 results of Amino Acid Stable Isotopes Amino acid stable isotopes are isotopes of specific elements within amino acids that do not decay over time. They are used in scientific research to study the metabolic pathways and processes that occur within cells. By labeling amino acids with stable isotopes, researchers can track their movement through the body and gain insights into how cells function. This information can be used to improve medical treatments and develop new therapies for a variety of diseases.