What is the primary purpose of conducting short-term, closed-building radon tests?

The primary purpose of conducting short-term, closed-building radon tests is to indicate radon potential and to determine whether follow-up measurements are necessary. These tests are typically used when quick results are needed, and they help identify buildings that might have elevated levels of radon. The closed-building conditions—typically, that windows and doors remain shut for 12 hours before and during the testing period—create an environment that allows for more accurate measurements of radon gas concentration.

While such tests can provide a snapshot of radon levels, they are not definitive measurements that would help make long-term conclusions about radon presence without considering further tests or follow-up measurements. Establishing the need for additional testing is crucial, particularly in areas where high radon potential is known. Therefore, the main goal is to gauge whether initial action or further investigation is required rather than to provide an absolute value or compare against past data.