The dg-tetrahydrocannabinol (Delta(9)-THC) content was identified and deter
mined quantitatively using a Gas Chromatography Detector (Gas Chromatograph
y - Electron Ion Detector) instrument in samples of illicit herbal cannabis
, Law enforcement authorities sent the samples to the Department of Forensi
c Medicine and Toxicology, University of Athens, for toxicological analysis
. The concentrations of Delta(9)-THC in these samples ranged from 0.08% to
4.41%. Such concentrations suggest that Greece might be at high risk, as an
area for the illicit cultivation of "pedigree" cannabis plants. The forens
ic aspects of cannabis classification are discussed.