âWhile testing the specificity of the KN Reagent test kits with 42 non-marijuana substances, I observed that 70% of these tests rendered a false positive,â said Dr. Omar Bagasra, director of the Center for Biotechnology, who conducted the experiments.
Magic 8 balls might be cheaper than these test kits, and perhaps more accurate...
18 posted on 12/29/2015 6:25:35 PM PST by AndyTheBear