The first step is to determine if you have elevated levels of radon in your home. This can be accomplished with a radon test. The Environmental Protection Agency recommends conducting a second test if the results of the first test are 4 picoCuries per liter (pCi/L) or higher.
The best way to accurately test the radon levels in your home is with a long-term test. However, if the first test has results 8 pCi/L or higher, a short-term test can often satisfy a real estate transaction. Once you know you have significant radon levels in the home, you can work on creating a plan for ridding the home of the radioactive gas and protecting your family for the long term.