What percentage of tests should ideally result in spikes during radon testing?

The ideal percentage of tests that should result in spikes during radon testing is around 3%. This figure is recognized based on statistical analyses and patterns observed in radon levels during testing procedures. A spike in radon levels indicates a temporary increase in radon concentration, which can occur due to various factors such as changes in weather, building occupancy, or ventilation patterns.

If a testing program consistently shows spikes in about 3% of tests, it suggests a manageable level of variability in radon concentrations and an effective testing methodology. This percentage is deemed appropriate because it minimizes both false positives as well as the oversight of significant radon exposure risks.

Higher percentages of spikes could indicate issues with testing practices or environmental factors affecting radon levels, thereby complicating the interpretation of test results. A well-designed radon testing program would aim for around 3% to align with best practices in environmental health and safety standards.