Where do nano particles go once they enter the body? ANSTO scientist helps shape new OECD guidance

Where do nano particles go once they enter the body? ANSTO scientist helps shape new OECD guidance Published on the 25th September 2026 by ANSTO StaffShare to FacebookShare to BlueskyShare to LinkedIn Key Points ANSTO scientist Dr Paul Callaghan helped develop new OECD guidance for studying how nanoparticles are absorbed, distributed and cleared by the body. The guidance establishes international best practice for assessing the safety of nanoparticles that are swallowed or inhaled. ANSTO's expertise in nuclear-based measurement techniques helped address a major challenge in tracking nanoparticles within the body. New international best practice guidance, co-written at ANSTO, sets out how to measure where nanoparticles like titanium dioxide end up in the body and how long they remain. The advisory has been shared by the Organisation for Economic Co-operation and Development (OECD), a forum and knowledge hub for data, analysis and best practices in public policy. Scientists have well-established ways to measure how a dissolved chemical is absorbed, distributed and cleared by the body. The OECD test guideline for those studies was first adopted in 2010. It was written for chemicals...