The concept of dark omics refers to the significant proportion of uncharacterized molecular features within complex biological samples that are often present yet remain inaccessible or unidentified by conventional analytical techniques. This article explores how ion mobility spectrometry integrated with mass spectrometry (IM‑MS) provides critical solutions to longstanding challenges in accessing these dark regions across metabolomics, proteomics, lipidomics, and emerging areas, such as exposomics.
