Health officials around the country have a message for everyone: Test your home for radon. The Health Department of Northwest Michigan says you could have radon in your home and not even know it. Tests help figure that out. The Environmental Protection Agency estimates radon causes more than 20-thousand lung cancer deaths every year. Radon can seep into your house from the outside and the health department says every home should be tested. “Your neighbor could have a high level of radon and you may have nothing or vice versa, so even if people have tested your area, it's really not an indicator of whether you have radon in your particular home or not,” Scott Kendzierski, environmental health services, said. Radon tests last three to five days. The health department says you should put it in the lowest livable level of your home, away from vents or windows.