Update — The Colorado Legislature has now passed a 5 ng limit for active THC. If you are suspect of driving under the influence of marijuana and your blood discloses 5ng or more of active THC a jury may permissibly infer that you are under the influence. Those that smoke marijuana on a regular basis recreationally or for medical purposes are at significant risk of being impacted by this legislative change. As a practical matter, many within the scientific and forensic toxicological community debate the wisdom of such a standard and whether marijuana impairment can be validly equated with a “per se” limit. If you are charged with driving under the influence of marijuana and have taken a blood test a good defense attacking the science behind this limit is imperative. Please call the attorneys at Seawell and Buckmelter, PC for a free consultation.