Due to overwhelming interest, the free radon test kits are out of stock. Please refer to the "Testing and mitigating your home" link below for a list of the cities, counties and independent contractors that are currently offering free test kits.
Test kits, where to test, how to test, find a contractor, file a complaint against a contractor
Dealing with radon in real estate transactions, radon-resistant construction
Public information videos, radon in Colorado, how radon gets in, radon in schools
Health information related to radon
Technical guidance