Radon Test Results

• If you followed up a short-term test with a long-term test, fix your home if your long-term test results is 4 pCi/L or more.
• If you followed up a short-term test with a second short-term test, the higher your short-term results, the more certain you can be that you should fix your home. Consider fixing your home if the average of your first and second test is 4 pCi/L or higher. 

image from http://www.health.state.mn.us/divs/eh/indoorair/radon/radonconbrochure.pdf