Radon is a odorless colorless gas and is a potential health hazard. It is the number one cause of lung cancer in non-smokers in the United States. It is highly recommended to have your home tested for radon before the purchase and may be required by some lending institutions. Radon test kit will be installed in the home, usually in the basement and left at the premises for a minimum of 48 hours. Radon testing requires a second trip to the home to pick up the test kit. Most results will be available within five business days.