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Abstract: The AMS system at GNS is well-established for radiocarbon (14C) measurements. It is routinely applied for dating services and has been used for atmospheric and oceanographic research. Work at the Lawrence Livermore National Laboratory (LLNL) has demonstrated the potential for AMS to extend research in the biological sciences through its ability to detect and measure 14C tracers used in biological test systems. This report concerns the feasibility of establishing a biological AMS capability at GNS, and preliminary discussions on its potential use in research in New Zealand. The report discusses the collaboration between GNS and LLNL and the results of a five week research visit to LLNL. Details are provided of the procedures required to prepare biological samples for AMS measurement, and the basis for evaluating data obtained from the measurement. The requirements and cost of establishment are considered. The report concludes that a biological AMS capability at GNS is feasible and would provide an exciting addition to our research and commercial capabilities. (auth)