How To Look At A House

McGarry and Madsen's home inspection blog for buyers of  

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How long does it take to get the results of a radon test?

Monday, June 25, 2018

The minimum test period for a radon test done by a licensed radon technician is two days (48 hours), but often ends up being a few hours longer to accommodate the schedules of the test technician and the homeowner. Results are available immediately or within a couple of hours after completion of the test, depending on the type of test device used. 


    When a radon test is done in conjunction with a home inspection, we usually place the test a couple of days before and pick it up at the inspection, so you have the radon results with your home inspection, or start it at the end of inspection and you get the results two days later.

    If you do your own test using a charcoal canister available at hardware and big-box home improvement stores, the minimum test period is 4 days (96 hours), and test results are available anywhere from three days to a week after the lab receives delivery of your canister.

    The two and four-day tests are normally done for real estate transactions or to provide data for a homeowner concerned about the radon level in their home, but longer-term tests of 90 days or more are also available.

    Visit our RADON page for other related blog posts on this subject, or go to the INDEX for a complete listing of all our articles.

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