Minimum detectable concentration (MDC) definition
Minimum detectable concentration (MDC) means the lowest concentration that is detectable at an established confidence level (95 percent at a minimum). Refer to “Radon Measurement Systems Quality Assurance” (ANSI/AARST MS-QA), as supplemented or amended, for the method to calculate MDC using the equation for the Lower Limit of Detection Counting Technology (LLDCT) Methods for CRMs and the Lower Limit of Detection Non-Counting Technology (LLDNCT) Methods for EICs.