Nonprofit regional blood center Blood Assurance is experiencing the lowest blood supply in the last two years. Due to the extreme blood shortage, the organization is strongly encouraging the community to consider making a blood donation at their nearest donor center or mobile blood drive as soon as possible. Blood Assurance is on a one-day supply of most blood types, rather than the typical five-day supply, due to winter weather and increased demand from area hospitals.“There is a nationwide blood shortage right now.