It will not leave the lab stage, it will continue to be produced at Oak Ridge. See https://www.ornl.gov/news/ornl-achieves-milestone-plutonium-238-sample https:

It will not leave the lab stage, it will continue to be produced at Oak Ridge. See https://www.ornl.gov/news/ornl-achieves-milestone-plutonium-238-sample https://www.ornl.gov/news/ornl-achieves-milestone-plutonium-...