radon retest 6

https://list-wiki.win/index.php/What_to_Expect_When_You_Request_a_Radon_Mitigation_Quote

A radon retest is simply taking another measurement after your initial test, usually because levels were borderline or you've made changes like sealing cracks or adding ventilation. It's important to wait at least three months and retest during the same season to get comparable results, especially in winter when windows are shut. Many people do it for peace of mind, as radon is a serious lung cancer risk and levels can fluctuate over time.