Facing marijuana charges? Call marijuana defense attorney Allen Trapp at 770-830-8560 for serious legal defense.
Facts about marijuana and its use
The primary psychoactive chemical in cannabis is delta-9 tetrahydrocannabinol (THC). Cannabis contains more than 400 different compounds, including more than five dozen other cannabinoids, which cause different effects on the user than THC.
Cannibis, which is most frequently used in the form of marijuana, has been used for at least 5,000 years. The most recent UN estimate places annual use at 162 people (4% of the world’s population) and daily use at about 22.5 million (.6%).
Screening tests for marijuana offenses in Georgia
THC and its primary inactive metabolite, THC-COOH (also called carboxy-THC), can be measured in blood, urine, hair, saliva, or perspiration using gas chromatography. The concentrations found in blood are the most useful in showing the amounts of these substances actually active in a person’s system at the time of testing.
In Georgia urine is never tested quantitatively (how much) – just qualitatively (what is it). Immunoassays, which are often employed as initial screening tests for the presence of marijuana, are usually cross-reactive with THC and its metabolites. In order to estimate the recency of usage, the National Institutes of Drug Abuse require both a THC reading and a carboxy-THC reading.
The Duqunois-Levine test is commonly used as a screening test in the field, although it does not definitively confirm that a substance is marijuana. The test is, however, routinely admitted in Georgia courts to obtain convictions for possession of marijuana.
Although only gas chromatography/mass spectrometry should be accepted as proof positive, as a practical matter not that many our clients have ever claimed that they were in possession of fake marijuana.