Canada's plasma supply critical, donors needed Sudbury man marks 30 years of donations as need for plasma soars. Steve Sullivan gave his 188th unit Wednesday. Canadian Blood Services says demand has rising 50% in five years, with only 30% of supply collected domestically. Angela Gemmill has more. Subscribe to CTV News to watch more videos: https://www.youtube.com/ctvnews Connect with CTV News: For live updates and latest headlines visit: http://www.ctvnews.ca/ For breaking news, fast, download