How is Minimum Detectable Concentration determined?

Minimum Detectable Concentration (MDC) is determined by applying response functions to the Lower Limit of Detection (LLD). The LLD represents the smallest concentration of a substance that can reliably be distinguished from the absence of that substance in a measurement.

When assessing radon concentration in environmental samples, the response function provides a relationship between the detected signal and the concentration of radon in the air. This relationship is essential because it allows for the quantification of how the measurement instruments respond to different levels of radon. By using this established response function alongside the LLD, professionals can calculate the MDC, ensuring that measurements made are statistically significant and reliable for decision-making processes regarding radon exposure levels.

Understanding this process is critical for radon measurement technicians, as it directly impacts the quality and reliability of their measurements. A well-defined MDC provides confidence that the detected radon levels are not only accurate but also meaningful within the context of health and safety standards.