The amount of radon in the air is measured in "picocuries per liter of air" or pCi/L. There are many kinds of low-cost "do it yourself" radon test kits you can get through the mail and in hardware stores and other retail outlets. Here is a coupon that can be used to purchase in home test kits: VDH Radon test kit coupon or you may purchase on line with credit card at: Virginia Radon Test KitMake sure you buy a test kit that will be analyzed by a laboratory listed by either of the two proficiency programs listed below: The National Radon Proficiency Program (NRPP)
If you prefer, or if you are buying or selling a home, you can hire a trained measurer to do the testing for you. Make sure you hire a qualified radon tester listed with either NEHA or NRSB.
Radiological Health Program | James Madison Building, 7th Floor | 109 Governor Street, Room 730 | Richmond, VA 23219 | Telephone (804) 864-8150 | Fax: (804) 864-8155