radon retest 3

https://atomic-wiki.win/index.php/Understanding_Radon_System_Installation_Cost_in_St._Louis

A radon retest is something you might do if your initial home test came back high or borderline. It's not about rushing; you wait a few months, seal the house again for a few days, then run another short-term test. This second measurement helps confirm the risk before deciding on mitigation. It's a practical step many homeowners take to make sure their family isn't breathing in excessive radiation from the soil.