Radon gas is the 1 cause of lung cancer in non-smokers and the following associations rmmend you test your home for radon gas: n lung Association, n Cancer Society and n medical Association. This test kit meets all EPA and individual state requirements, offering you a quick and accurate radon level of your home or office. The kit includes two (2) short-term radon gas detectors that can be used at the same time and location. The two (2) Test detectors satisfy real estate transaction requirements. Safe and easy to use. Send it in using the pre-paid Postage envelope included in the kit, lab analysis fee included and you'll have your results back inside a standard work week. The EPA estimates that 1 one of 15 homes nationwide suffers from radon gas (which is colorless and odorless) and 22, 000 deaths annually are attributed to radon gas.