Published by Kirby Winn on Tuesday, September 8, 2026 in Blog
Following the tragic events of September 11, 2001, many people felt helpless to support those directly affected, and turned to blood donation as a way to help. Donors in the Midwest and across the country formed lines stretching out the door and around the block, waiting patiently for the opportunity to help.
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While the impulse to help in any way possible is understandable, the unfortunate truth is the tremendous outpouring of support resulted in an extreme spike in the blood supply that was almost entirely unnecessary. Tens of thousands of excess donations went to waste. This proved to be a difficult, but vital, lesson in disaster response for the blood industry.
What happened on 9/11? The surge in blood donation
Following the attacks, volunteer donors stepped forward in great numbers. The public assumption was that thousands of injured survivors in New York, Pennsylvania, and Washington D.C. would desperately need transfusions.
Tragically, the grim reality of 9/11 was that there were very few survivors. The attacks resulted primarily in fatalities, and the anticipated need for emergency blood never materialized. Because donated red blood cells have a shelf life of just 42 days, the system was suddenly overwhelmed with a massive surplus. Testing, processing, and storage capabilities of blood centers were pushed beyond their limits. Ultimately, a significant portion of the blood donated in the aftermath of 9/11 expired and had to be discarded.
Lessons for Today
Blood providers in the U.S. have studied the impact of 9/11 on the nation’s blood supply to learn from the experience and better manage donor response in future mass casualty events.
Lesson #1 – The blood “on the shelf” is what saves lives: It takes 24 to 48 hours for a newly donated unit of blood to be tested, processed, and delivered to a hospital. In a sudden mass casualty event, victims cannot wait for new donors to roll up their sleeves. They rely entirely on blood that was donated by routine donors in the days or weeks prior to the event.
Lesson #2 – Work towards a planned, coordinated response: Blood providers will send public messaging based on actual demand for blood, not as an automatic impulse to help. The national Blood Emergency Readiness Corps (BERC) is an example of blood providers working together in response to spikes in blood utilization.
Lesson #3 – Consistency over surges: The blood supply requires a steady, predictable flow of donations. When massive spikes happen, it can lead to a severe shortage later, because donors who stepped forward on the day of event have to wait for 56 days, or nearly two months, before their next donation. Consistently meeting patient needs, with a built-in margin to provide flexibility, puts blood providers on the best footing for disaster response.
Lesson #4 – A staggered response is better: Today, in the wake of a tragedy, blood providers and public health officials will actively urge the public to make appointments for the coming weeks and months, rather than urging an overwhelming response on day one.
Transfusion medicine can play a powerful role in emergency response, and we are accustomed to seeing blood donors step forward with generosity in response to all manner of health crises. While the generosity seen on 9/11 was a beautiful reflection of the human spirit, it taught us the best way to prepare for a disaster is to develop consistent, routine patterns of blood donation at all times of the year. And when disaster strikes, to engage with a surge in volunteer blood donation on the basis of actual needs, working in a coordinated manner with fellow blood providers across the country.