has_metric_category has_units has value type single value ID based metric single run based metric number of identified quantification data points The number of identified data points for quantification purposes within the run after user defined acceptance criteria are applied. These data points may be for example XIC profiles, isotopic pattern areas, or reporter ions (see MS:1001805). The used type should be noted in the metadata or analysis methods section of the recording file for the respective run. In case of multiple acceptance criteria (FDR) available in proteomics, PSM-level FDR should be used for better comparability. MS MS:4000103 count unit