I had mine removed at 68 in 2020. I know the labs report it differently so I always use the same lab. my results show < 0.01. so they must be using a different test. I know my daughter would worry but it is what it is. His has barely moved if at all. If the cancer comes back after 6 years then it should be easy to keep under control. If think on this site someone left a quote. "Mark Twain once said that I know worrying must help because it never comes true. "