The Canadian Apheresis Group consists of representatives of all centres performing therapeutic apheresis in Canada. Its role is to collect data on all procedures performed to monitor the effectiveness of treatment and to survey complications associated with it. As a national organization, the CAG will provide liaison with other national and international apheresis societies. It will promote the study of apheresis by encouraging cooperative clinical trials across Canada and in association with international bodies and it will foster basic research into the mechanisms of the diseases treated. The CAG will aid in the assessment and application of new and innovative techniques of apheresis and will provide education and advice to Canadian practitioners to ensure that the technique of therapeutic apheresis is applied in a humane and scientifically sound manner across the country, with optimal cost efficiency and preservation of our national blood supply.