Radon is a dangerous radioactive gas naturally produced by the breakdown of uranium in the ground. Prolonged exposure to high levels of radon can cause lung cancer. The EPA and surgeon general recommend that all homes below the third floor be tested for radon.
Inform yourself by reading about radon. You will find state radon contact information at the EPA Web site and at the Radon Information Center Web site (see Resources).
Consider buying a long-term testing kit, especially if you live in an area renowned for radon exposure. Besides long- and short-term testing kits, you can buy passive and active testing devices. Active devices require electrical power.
Decide whether further action is needed upon receiving the results of the tests. The laboratory will report your radon levels in picocuries per liter (pCi/l).