I've been tested every 2 months. After chemo, radiation and surgery my first 2 tests were zero. The next 3 tests went from .04 to .06 then to 1.13. After scans last week a very small spot on my lung has shown up. So a cryoablation procedure is being scheduled now. Hopefully blood tests will go back to zero. We will see what happens. I'm glad these blood tests can detect cancer developing very early instead of dealing with a larger problem.