What indicates potential tampering of a radon test?

The indication of potential tampering of a radon test is most notably reflected in the deactivation of closed building conditions. This refers to the controlled environment that is essential for valid radon testing; the building should remain closed for a certain period prior to and during the test to ensure that external factors do not influence the radon levels measured.

If the closed building conditions are disrupted—such as by opening windows or doors, or by using exhaust fans—this can lead to artificially low readings of radon levels. Such actions compromise the integrity of the test and suggest potential tampering, as they deviate from the protocol necessary for accurate results.

In contrast, stable temperature readings, consistent positioning of the test device, and unbroken tamper seals are all components that would typically affirm the validity of a radon test. While they are important for confirming the reliability of the data collected, they do not directly point to tampering, as the disruption of the testing conditions does. Understanding these factors is crucial for interpreting radon test outcomes accurately and ensuring testing integrity.