The PRO-LAB® Radon Gas Short Term Test Kit offers you a professional radon analysis of your home or office utilizing patented liquid scintillation technology. It will quickly and accurately determine the amount of indoor radon gas you are breathing. The PRO-LAB® Radon Gas Short Term Test Kit allows you to take two tests at the same time and location in order to get precise results. Valid for Real Estate transactions. Laboratory results within 7 days. Express service is available for an additional fee.