Decline in demand for plasma requires decrease in collections March 29, 2012 (THUNDER BAY) – After careful review and consideration, Canadian Blood Services has decided to close the Thunder Bay Plasma Centre effective April 12, 2012. All Canadian Blood Services employees in Thunder Bay – 28 full-time and part-time employees combined, and two contract physicians – will be affected and were informed earlier this afternoon. Over the past two years, new replacement products and a decline in hospital demand have led to a decrease in the need for plasma for transfusion. Based on current projections