Testing for radon is the only way to determine its presence in your home or workplace. Radon testing kits are widely available and can be purchased online or from hardware stores. There are two main types of tests: short-term tests, which take 2-90 days, and long-term tests, which take more than 90 days. The EPA recommends starting with a short-term test and, if high levels are detected, following up with a long-term test for more accuracy.
