What is used to measure accuracy in radon testing?

In radon testing, accuracy is assessed through the use of controls. Controls are utilized to ensure that the measurement process is functioning correctly and providing reliable data. They can involve using known reference standards to compare against the test results. By evaluating how well the test results correspond with these known controls, a technician can determine the accuracy of the radon measurements being taken.

While spikes, blanks, and duplicates play roles in radon measurement quality assurance, they do not directly measure accuracy in the same way that controls do. For example, spikes are used to assess the sensitivity of a measurement system, and blanks help identify background levels or contamination, while duplicates are used to assess precision, or the reproducibility of results under the same test conditions. Controls, however, are essential for establishing that the results align with expected standards, thereby validating the accuracy of the test outcomes.