limit of detectionmeans the output signal or concentration value above which it can be affirmed, with a stated level of confidence that a sample is different from a blank sample containing no determinand of interest;
limit of quantificationmeans a stated multiple of the limit of detection at a concentration of the determinand that can reasonably be determined with an acceptable level of accuracy and precision.
uncertainty of measurementmeans a non-negative parameter characterizing the dispersion of the quantity values being attributed to a measurand, based on the information used.