What is low THC oil? Dr. Rudert Answers Low THC oil or medical cannabis oil is derived from the marijuana plant. What is the law in Georgia regarding low THC oil? Dr/ Rudert answers: The law in Georgia presently allows certain qualified persons in Georgia to legally possess up to 20 ounces of low THC oil. If you qualify, the Georgia Department of Public Health will issue you a "Low THC Registry card" which allows you to legally possess the oil. Georgia law is currently mor