2021-05-19 11:20 Metabolomics refers to the systematic identification and quantification of the metabolome of a biological system at a specific point in time. And metabolome means the complete set of small-molecule chemicals found within a biological sample. In metabolomics, metabolites and their concentrations directly reflect underlying biochemical activity and state of cells or tissues. For metabolome profiling, mass spectrometry and NMR are the most commonly used techniques.