Radon gas has been found in varying amounts in every state in the US killing up to 22000 people each year from lung cancer. Deadly radon gas seeps into homes through cracks in the foundation and walls, sump pumps and floor drains. The Pro-Lab Do It Yourself Radon Gas Test Kit offers you a professional radon analysis of your home or office utilizing patented liquid scintillation technology. Laboratory results within one week. Express service is available for an additional fee.