The rapper "Nas" was arrested in Henry County, Georgia at a DUI roadblock for DUI marijuana on September 10, 2009. The charges were recently dropped when the blood test came back negative for marijuana. The police report stated, “Mr. Jones had a green tongue with raised taste buds and his pulse was raised to 116 beats per minute...eyelid tremors in both eyes and body tremors.” The Police also reportedly smelled a strong odor of “raw marijuana.” These are indicators used by Police Officers trained in Drug Recognition Expert techniques or DRE.
Blood test negative means that they conclusively did not work in this case. Further, Nas reported failed the walk and turn test and the one leg stand. However, he had no alcohol or drugs in his blood test results. The walk and turn test and one-leg stand are standardized field sobriety tests used to detect alcohol impairment by estimating blood alcohol. As you see in this case, they don't work either. The officer smelled the odor of raw marijuana but a search of the vehicle found no drugs. The smell of raw marijuana is a common reason to justify the search of a vehicle for illegal drugs. Two words: "Junk Science."