Could a stable isotope of carbon be used in the same way?

Yes, a stable isotope of carbon, such as carbon-13, can be used in various applications similar to other stable isotopes. It is commonly employed in medical imaging, metabolic studies, and tracing biochemical pathways due to its non-radioactive nature. Additionally, carbon-13 can be utilized in nuclear magnetic resonance (NMR) spectroscopy to provide insights into molecular structures. Its stability allows for safe and effective use in research and industry without the risks associated with radioactive isotopes.