Gas Chromatography

Gas chromatography (GC) is an analytical laboratory technique used to separate and identify volatile compounds in cannabis plant material. In cannabis genetics work, GC analysis measures terpene profiles by vaporizing samples and detecting individual aromatic compounds as they pass through a heated column. This method differs from liquid chromatography or mass spectrometry approaches, and produces detailed compound separation data useful for strain documentation. GC results commonly appear in cannabis breeding records to establish lineage aromatic fingerprints, though results vary based on sample preparation, plant tissue type, and instrument calibration. Breeders reference GC data when tracking inherited terpene expression across generations.

Plant scientists and seed producers use GC analysis to objectively catalog terpene composition in parent plants and offspring, supporting selective breeding for consistent aromatic profiles. Standardized GC testing helps distinguish phenotypic variation and validate strain authenticity in breeding programs.