Radioactive tracer

A radioactive tracer is a substance that contains a radioactive element and can be used in various scientific fields, particularly in medicine, biology, and environmental studies, to track processes or movements within a system. ### Key Characteristics of Radioactive Tracers: 1. **Radioactive Isotopes**: Radioactive tracers are typically isotopes of elements that emit radiation, such as carbon-14, iodine-131, or technetium-99m.