RTCA, Radon Testing Corporation of America, has been providing radon testing services since 1986. We have been rated the #1 Radon Laboratory by Ralph Nader's Consumer Advocacy Group, Public Citizen and have received high ratings from our professional and government clientele.

RTCA is the choice of thousands of radon professionals and homeowners nationwide!

This site has been designed for anyone interested in learning about radon and RTCA's radon services. Whether you are a professional radon tester or mitigator, homeowner, or simply interested in learning about radon, RTCA has developed this website to help you find what you are looking for. We hope you find the site useful.