THC / CBD
Cannabis is often tested for THC and CBD. A plant’s THC and CBD content indicates the potency of its effects. THC and CBD are usually measured as a percentage of weight.
- High THC/low CBD
- Equal THC/CBD
- High CBD/low THC
Most strains are high in THC. These strains have the strongest psychoactive effects. Strains that are rich in CBD usually have weak psychoactive effects or none at all.
THC and CBD levels are influenced by environmental factors during the cultivation process. So, cannabis flowers from the same strain may not have the same cannabinoid levels. This makes it hard to identify strains by looking at their THC and CBD content.
Hazekamp, A. and Fischedick, J. T. (2012), Cannabis – from cultivar to chemovar. Drug Test Analysis, 4: 660–667. doi: 10.1002/dta.407
Hillig, K. W. and Mahlberg, P. G. (2004), A chemotaxonomic analysis of cannabinoid variation in Cannabis (Cannabaceae). American Journal of Botany, 91: 966-975. doi: 10.3732/ajb.91.6.966