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Cited by 308

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Potency Trends of Δ9-THC and Other Cannabinoids in Confiscated Marijuana from 1980–1997

ElSohly, MA, Ross, SA, Mehmedic, Z, Arafat, R, Yi, B, Banahan, BF·2000·Journal of Forensic Sciences

Abstract

The analysis of 35,312 cannabis preparations confiscated in the USA over a period of 18 years for delta-9-tetrahy-drocannabinol (Δ9-THC) and other major cannabinoids is reported. Samples were identified as cannabis, hashish, or hash oil. Cannabis samples were further subdivided into marijuana (loose material, kilobricks and buds), sinsemilla, Thai sticks and ditchweed. The data showed that more than 82% of all confiscated samples were in the marijuana category for every year except 1980 (61%) and 1981 (75%). The potency (concentration of Δ9-THC) of marijuana samples rose from less than 1.5% in 1980 to approximately 3.3% in 1983 and 1984, then fluctuated around 3% till 1992. Since 1992, the potency of confiscated marijuana samples has continuously risen, going from 3.1% in 1992 to 4.2% in 1997. The average concentration of Δ9-THC in all cannabis samples showed a gradual rise from 3% in 1991 to 4.47% in 1997. Hashish and hash oil, on the other hand, showed no specific potency trends. Other major cannabinoids [cannabidiol (CBD), cannabinol (CBN), and cannabichromene (CBC)] showed no significant change in their concentration over the years.

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Metadata

Authors
ElSohly, M., Ross, S., Mehmedic, Z., Arafat, R., Yi, B., & Banahan, B.
Venue
Journal of Forensic Sciences
Published
2000-01-01
Volume
45
Issue
1
Pages
24-30
ISSN
0022-1198 (ISSN-L)
OpenAlex
W1447217750
Cited by
308
References
2
FWCI
4.13
Type
journal article
Language
en
Open access
closed

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