Radon is a radioactive gas that’s produced naturally in soil due to decay of uranium found in most soils. It can get into your home through cracks or holes in your foundation or around pipes.
It is estimated that 1 of every 15 homes in the U.S. has elevated radon levels. If your home has never been tested this is something you should have done. You can do it yourself with a test kit that comes with instructions. Or, get a professional service to test for you. The best testing is long term, where air samples are measured for 90 days.