Local Marijuana Getting Stronger
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Local Marijuana Getting Stronger By Elaine King Times Medical Writer Marijuana available in Shreveport is increasing in potency, a study of samples confiscated in 1971, 1972 and 1973 reveal. The study, published in the "Journal of Forensic Sciences" in October, said " . . . marijuana available in Shreveport is of reasonably good quality." There is an increasing amount of marijuana potent enough to produce a lessening "in a individual's ability to perform tasks requiring concentration, c o o r d i n a t i o n and judgment," the article noted. Authors of the article were Dr. Joseph Manno, associate professor, d e p a r t m e n t of p h a r m a c o l o g y and therapeutics at Louisiana State University School of Medicine in Shreveport; Dr. Barbara Manno, pharmacologist, general m e d i c a l research, Veterans Administration Hospital in Shreveport, and associate professor, d e p a r t m e n t of p h a r m a c o l o g y and therapeutics at LSUS medical school; David Walsworth, medical school student; and Ray Herd, director of the Northwest Criminology Laboratory here. The study was conducted using randomly selected samples obtained from the Northwest Criminology Laboratory. For 1971, the article noted, 87 per cent of the marijuana confiscated was "drug-type" marijuana and most contained concentrations of THC, one of the cannabinoids in marijuana, that would make it what is considered "good" marijuana Concentrations of THC in " good ' ' marijuana cigarettes, the article noted, range between .5 and 1.5 per cent. Concentrations of THC above 1.5 per cent would make it very good to excellent marijuana, while below .5 per cent would be poorer quality, the paper said. Drug-type marijuana was defined in the article as having a high THC content and a low content of cannabidiol (CBD), another cannabinoid found in marijuana. In 1972 the quality of the individual samples of marijuana fell, the article noted, but in 1973 "There was a dramatic increase in the quality of the marijuana samples " "It can be seen that the overall trend in the Shreveport area is toward increasing 'quality' of marijuana," the article said The article concluded that the delay between "harvest and distribution for general consumption" of marijuana here is not very long, based on the low c o n c e n t r a t i o n of cannabinol (CBN) in the marijuana studied The conclusion is based on the finding noted in the article that THC will enventually decompose to CBN. "A steady increase in potency of the samples was evident in the more recently confiscated specimens," the study noted.
|Title||Local Marijuana Getting Stronger|
King, Elaine T.
Manno, Joseph E.
Pharmacology and Therapeutics Department (Louisiana State University Health Sciences Center-Shreveport)
|Identifier||See reference URL on the navigation bar.|
|Source||Louisiana State University Health Sciences Center Shreveport Medical Library (http://lib.sh.lsuhsc.edu)|
|Coverage-Spatial||Shreveport (Caddo, La.)|
|Rights||Physical rights are retained by Louisiana State University Health Sciences Center Shreveport. Copyright is retained in accordance with U.S. copyright laws.|