A short-term radon test (minimum of 48 hours) can give you an idea of what the radon levels in your house may be. By nature, radon levels fluctuate hourly, daily and seasonally (one reason a test must be conducted for a minimum of 48 hours). There are certain requirements for conducting a proper radon test. These tests can be done by a professional radon tester. Homeowners can also call their local Radon Information Center (http://www.dhs.wisconsin.gov/radiation/radon/RadonInfoCenters.htm) to inquire about radon testing.