Health Canada’s Drug Analysis Service (DAS) operates laboratories across Canada that analyze suspected illegal drugs seized by Canadian law enforcement agencies. These statistics are based on samples analyzed and may not be representative of all substances seized in Canada, nor of what drugs are circulating on the market. The data contained represent the number of times a substance was identified in submitted samples. A single sample may contain more than one substance. Categorization of substances is based on the Controlled Drugs and Substances Act (CDSA).