I can understand that sentiment. It does get old having to constantly ask for donors. It seems like everytime we just get back to normal operations something happens and donors disappear. We generally like to keep about a 3 day supply on our shelves at all times. To account for emergent needs, loss of drives or losing collection days due to external events. Early reports in regards to this current situation is that we have lost over 800 expected donations just for next week. That's 8 days of supply. (ETX only, I can share regional and national numbers if you like) Before this became an issue we were at about a 2 day supply of blood... come mid week next week, we will be at less than a 1 day supply if things don't turn around quickly and we find donors to replace those lost drives.
, the need is also very constant and steady and blood has an expiration. Red cells have a shelf life of 42 days, platelets 5 days from the date of collection. Testing generally takes about 48 hours, so we have 40 days on red cells and 3 days on platelets. Plasma can be frozen for up to 1 year, liquid plasma has a shelf life of 26 days.
While blood donors can only donate every 56 days, which leave a 14 day gap we have to find an additional donor to fill the gap. However, the average donor only donates 1.5x per year so we are constantly having to find new donors to fill the gaps.
Platelet donors can give every 2 weeks. Most come about 3-4x per year. That leaves us ALOT of platelet donors we have to market to constantly to maintain the community supply.
Annually we ship over 40,000 units of blood products (red cells, platelets and plasma) just within East Texas. Just over 100 units per day, we have to see 150-200 donors per day to meet this demand( account for deferrals, quarantine units, etc)....
With only about 37% of the population eligible to donate and less than 5% actually giving blood it kind of makes sense that we have to constantly be in the market to find donors.
Hope this information helps. Again, let me know if you want a tour and to see the behind the scenes. Happy to do so.