post-mitigation radon testing 2

https://victor-wiki.win/index.php/Why_You_Need_a_Local_Radon_Contractor_for_Your_Home_Test_Results

After radon mitigation is installed, post-mitigation radon testing confirms the system is effectively lowering levels in your home. A short-term test, typically placed in the lowest lived-in area, measures radon concentrations for 2-7 days. Waiting at least 24 hours after mitigation ensures accurate results by avoiding false positives. This follow-up testing is the only way to verify your family's long-term exposure is safe.