AOAC International started as the Association of Official Agricultural Chemists over a century ago and continues to serve as one of the primary method and standard developers for the analytical community when it comes to the area of agriculture. Their activities cover the safety of food and beverages, dietary supplements, feeds, soil, water, veterinary drugs, and other aspects of the agricultural process. Over the last few years, AOAC has issued guidance for screening pesticides in cannabis. Spex CertiPrep AOAC standards reflect the list of pesticides under scrutiny for cannabis testing.