Displaying 1 results of Niacin Stable Isotopes Niacin stable isotopes refer to the stable isotopes of the vitamin B3 or niacin molecule. These isotopes have identical chemical properties to niacin, but their atomic weights differ, making them useful in metabolic studies. Niacin stable isotopes can be used to track the metabolic fate of niacin in the body, measure niacin turnover rates, and assess niacin absorption from food sources. They are valuable tools for understanding the role of niacin in human health and disease.