Lipidomics is the large-scale study of non-water-soluble metabolites (lipids). Key technologies used in lipidomics research include electrospray ionization, mass spectrometry and liquid chromatography-mass spectrometry. Lipids represent key signaling molecules which control, or are (bio)-markers of, physiological and disease processes. They are also key structural components of cellular membranes. Lipidomics is thus a subset of metabolomics that aims to detect and quantify all lipid species within a biological sample