The Radon Information Center is maintained by the world's largest producer of radon test kits and radon testing devices, Air Chek, Inc. You can test for less than $10. You get a complete do-it-yourself radon test kit, all S&H in the USA, sample analysis, and your written report. The Air Chek radon test kit has earned a TOP RATED listing, three times, by the leading Consumer product testing group ...