Testing Options
Short-term tests typically run from 3 to 7 days and require closed house conditions for the duration of the test. These kits work by capturing radon in charcoal which is then analyzed by the lab. These kits provide a quick snapshot of the radon present during the test and are usually a good indication of whether more comprehensive testing is needed.
Long-term tests run from 90 days to a year and are conducted with the home under normal living conditions. These test kits typically are alpha track detectors which use a film that gets etched by alpha particles. The lab analyzes these kits by counting the number of alpha tracks. These tests give a more representative picture of the radon levels in a home over time.
Continuous or active radon monitors are electronic devices that integrate continuous radon measurements over time. They run constantly but usually require some type of periodic calibration. This is the type of test most commonly used by professional radon testers. The National Radon Proficiency Program (NRPP) maintains a list of certified radon professionals in Colorado that you can hire to test for you.
FREE Short-term Test Kits
The Weld County Department of Public Health and Environment is offering free short-term radon test kits to all Weld County residents (one per household, while supplies last).
These kits can be requested through our partner, Alpha Energy Laboratories.
Once you receive your short-term test kit, watch this video, for help on setting up your test.
Additional Kits Can Be Purchased At...
Most local hardware stores sell radon test kits. You can also purchase kits online through the following suppliers:
Alpha Energy Laboratories
Air Chek
Hiring a Radon Measurement Contractor
Certified radon measurement and mitigation professionals: Radon Active Licensing Listing.
Disclaimer: WCDPHE does not accredit, certify, license, recommend or endorse listed individuals or companies, nor are we responsible for work done or liability incurred by residents. Listed contractors are certified by the National Radon Proficiency Program or the National Radon Safety Board, and must be licensed by the Colorado Department of Regulatory Agencies.
As of July 1, 2022 all contractors conducting radon measurement and/or mitigation in Colorado must be licensed by the Colorado Department of Regulatory Agencies (DORA). Verify that the certified contractor you have selected is licensed by DORA.