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Perform and Submit the Test — Start and Document Test

Beginner7 mins

Part of project

Radon Testing · Step 5 of 10

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To perform the test, expose the kit for a duration between 48 and 96 hours. Exposure times less than 2 days or more than 7 days will render the test invalid. Accurately register the start date and time, as well as the stop date and time, on the information form provided with the test kit. After completing the exposure, seal the sample in its designated mailer and send it to the lab as soon as possible. The lab typically needs to receive the sample within 10 days of the stop time to process it as valid. If postal services are slow, consider using an expedited shipping method like FedEx or overnight delivery to meet this deadline. Ensure each test kit is returned in its own individual mailer.

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FAQs

How long does a typical DIY radon test take, and what's the estimated cost?

A short-term DIY radon test typically takes 2-7 days to complete, as indicated by the project's estimated time. The cost for a single test kit can range from $15-$50, depending on the brand and type of kit purchased, not including postage for mailing it back to the lab.

What are "closed-house conditions" and why are they important for accurate radon testing?

Closed-house conditions mean keeping all windows and outside doors closed for at least 12 hours before and during the entire testing period, except for normal entry and exit. This is crucial because ventilation can dilute radon levels, leading to an artificially low and inaccurate reading of your home's average radon concentration.

Where is the best place to position the radon test device in my home?

Place the test device in the lowest lived-in level of your home, such as a basement or first-floor bedroom, away from drafts, direct sunlight, and high heat or humidity. Avoid placing it in bathrooms, kitchens, laundry rooms, or closets, and keep it at least 20 inches above the floor.

What should I do if I accidentally disturb the test kit or open windows during the testing period?

If you accidentally disturb the kit or open windows for an extended period, it's best to restart the test with a new kit to ensure accurate results. Maintaining consistent closed-house conditions is vital for a reliable radon reading, as disturbances can skew the outcome and compromise the validity of your test.