Radon testing is a process of measuring the levels of radon gas in a home or building. Radon is a naturally occurring, colorless, and odorless gas that can be harmful to human health if it accumulates in high concentrations. Radon gas is produced by the breakdown of uranium in soil, rocks, and water, and can seep into buildings through cracks and gaps in the foundation. Radon testing typically involves placing a small device in the lowest livable area of a home or building, such as a basement or crawlspace, for a specified amount of time. The device then collects data on the levels of radon gas present, which can be analyzed to determine whether further action is necessary to reduce radon levels and ensure a safe living environment. Radon testing is recommended for all homes, regardless of location or age, as radon gas can be found in all types of buildings and can pose a serious health risk if left unchecked.