The quickest way to test for radon is with a short term radon testing kit.
A short term radon test kit remains in your home for three to seven days. Radon levels tend to vary from day to day and season to season, a short term radon gas test is less likely than a long term radon test to tell you your year-round average radon level. If you need results quickly, however, a short term radon test followed by a second short term test can be used to decide whether or not your home or office has a radon gas problem.
These short term radon tests use a container that contains a quantity of granular activated charcoal. The charcoal absorbs the radon gas entering the canister from the surrounding air. At the end of the radon gas test period, the canister is sealed and sent to the laboratory in the pre-paid mailer for analysis. Analysis is included in the price.