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Interpreting your test results

Linn County Healthy Homes has prepared a short PowerPoint presentation on interpreting your radon test kit results. To download and view it, click here.

Your test results are presented in pCi/L – “picocuries per liter”. It's a measure of how many radioactive particles come out of a certain amount of air in a minute.

FIRST, did you do the test right?

Did you test in the lowest level of your home that you use on a regular basis? 
Testing in a basement (or crawl space) that is used infrequently is more likely to give a high result, but it may not reflect your actual exposure accurately. 

Were the doors and windows of your house closed (except for normal coming-and-going) during the test? 
"Open house" conditions invalidate a low short-term radon test result. It is acceptable to run air conditioning during a short-term test. After you've answered the questions above, click on your result below to get our recommendation (based on the US EPA's recommendations) of what to do next.
If your recommendations call for you to pursue remediation visit our page on radon remediation HERE. If you still have questions about how to proceed, please call Linn County Healthy Homes at (319) 892-6000.

Should I take a long-term or a short-term test?

Considering the low cost of do-it-yourself radon testing, why not do both? If your short-term test comes back high, you'll be glad you have a long-term test started. If it comes back low, a long-term test can give you the comfort of a strong confirmation - or catch something the short-term test missed.

Where should I place my radon test kit? 

We recommend testing in the lowest level of your home that you use regularly. But at $6.00 per short-term test, it might be smart to test in your basement (even if you seldom use it) and on the first floor. More information gives you the power to make better decisions. 
Healthy Homes,
Jun 30, 2011, 11:03 AM