carbon-13 (13C), a naturally occurring isotope of carbon, with an atomic mass of 13, occurring 1.11% of the time. It is used as a tracer in liver function tests and a few metabolic tests.
carbon-13 (13C), a naturally occurring isotope of carbon, with an atomic mass of 13, occurring 1.11% of the time. It is used as a tracer in liver function tests and a few metabolic tests.