TrueLevel™ Testing Program
Frequently Asked Questions
Clear answers to common questions about how the TrueLevel™ Testing Program works and what to expect.
Frequently Asked Questions
Why do radon levels change so much?
Radon levels rise and fall throughout the year as weather, ventilation, and daily living patterns shift. Heating, cooling, storms, open windows, and even how often doors are used can change how radon moves through a home. Because of this natural variation, a short test may not reflect the level your home actually lives with.
Why does test length matter?
Longer tests capture more of your home’s normal behavior. A 10‑day test shows several cycles of weather and activity. A 30‑day test shows even more. A 90‑day test smooths out short‑term swings and provides the most stable picture.
The longer the test, the higher the confidence that your result reflects your home’s true year‑round radon level.
What’s the difference between the 10‑day, 30‑day, and 90‑day tests?
- 10‑Day Test: A useful snapshot with moderate confidence
- 30‑Day Test: A clearer picture with high confidence
- 90‑Day Test: The most stable and accurate view with the highest confidence
You choose the option that fits your home and schedule.
What is the TrueLevel™ Annual Radon Score?
It’s an estimate of your home’s true year‑round radon level. Your raw test result is adjusted using Utah‑specific data, home‑behavior patterns, and evidence‑based modeling to reflect how your home behaves across the entire year.
What is the confidence band?
The confidence band shows how sure we are that your result reflects your home’s typical radon level.
- A narrow band means your test conditions were stable.
- A wider band means your home’s radon level fluctuated more during the test.
Is a 10‑day test good enough?
Yes, a 10‑day test provides a meaningful starting point and a corrected annual score. If you want a tighter confidence band or a more stable result, the 30‑day or 90‑day test offers higher confidence. But every option gives you useful information about your home.
What if my number is high?
Radon is harmful at any level, but higher results deserve careful attention. Your TrueLevel™ Annual Score helps you understand your long‑term exposure, and the confidence band helps you see how stable your result is.
If your annual score is elevated, the Radon Navigator™ tools can help you make a clear, informed decision about mitigation.
Do I need to test again?
Most homes only need one test. If your confidence band is wide or your home is unusually volatile, you may choose a longer test for a clearer picture. But the TrueLevel™ Annual Score is designed to give you a reliable estimate without requiring multiple tests.
Is radon an emergency?
Radon exposure is cumulative. It does not create immediate danger, and you have time to make informed decisions without pressure. The TrueLevel™ program is designed to help you understand your exposure clearly and act confidently.
How accurate is this program?
The TrueLevel™ model uses Utah‑specific data, home‑behavior patterns, and evidence‑based correction factors to estimate your home’s true annual radon level. No test is perfect, but longer tests provide higher confidence, and the confidence band shows exactly how stable your result is.
How much does this cost?
All services and test kits provided through the TrueLevel™Testing Program are free.