(Minneapolis, MN)  —  The Minnesota Department of Health is reminding people to conduct radon testing before buying a new home.  The practice helps find and reduce gas, linked to causing cancer.  However, the number of home radon tests completed during home purchases dropped by nearly 40-percent in 2022.  The state says nearly 20-thousand radon tests were reported in 2022, compared to around 32-thousand in 2021.