radon retest verification 3

https://radontestingservicesguide.novacrestiq.com/posts/how-radon-testing-services-protect-your-home-and-health-in-st.-louis

When your initial radon test shows levels near the EPA action threshold, a radon retest verification confirms whether mitigation efforts are working or if conditions have changed. It's simply taking another measurement, ideally during the same season, to verify that radon levels are truly at a safe concentration. This step gives homeowners confidence before making final decisions about long-term mitigation strategies or real estate transactions.