Data is from the National Blood Collection and Utilization Survey (NBCUS). * Donors deferred for low hemoglobin included those that do not meet the current FDA blood hemoglobin level requirements for blood donation.
** High-risk behavior deferrals include deferrals intended to reduce the risk of transmission of infectious diseases including HIV and hepatitis viruses. Examples of questions intended to identify these risks are sexual contact (men who have sex with men [MSM]) and non-medical injection drug use questions. ^ Travel deferrals are deferrals for travel to a specific region of the world.
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Distribution of blood donor deferrals in the U.S. in 2021 and 2023, by reason
In 2023, there were an estimated * blood donor deferrals in the United States. The most common reason for donor deferral was low hemoglobin/hematocrit, which accounted for **** percent of all deferrals that year. This graph shows the distribution of blood donor deferrals in the United States in 2021 and 2023, by reason.
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Wiley. (August 1, 2025). Distribution of blood donor deferrals in the United States in 2021 and 2023, by reason [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 21, 2026, from /statistics/1204134/blood-donor-deferrals-by-reason-distribution/
Wiley. "Distribution of blood donor deferrals in the United States in 2021 and 2023, by reason ." Chart. August 1, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 21, 2026. /statistics/1204134/blood-donor-deferrals-by-reason-distribution/
Wiley. (2025). Distribution of blood donor deferrals in the United States in 2021 and 2023, by reason . ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 21, 2026. /statistics/1204134/blood-donor-deferrals-by-reason-distribution/
Wiley. "Distribution of Blood Donor Deferrals in The United States in 2021 and 2023, by Reason ." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 1 Aug 2025, /statistics/1204134/blood-donor-deferrals-by-reason-distribution/
Wiley, Distribution of blood donor deferrals in the United States in 2021 and 2023, by reason ÌÇÐÄÆƽâ°æ, /statistics/1204134/blood-donor-deferrals-by-reason-distribution/ (last visited July 21, 2026)
Distribution of blood donor deferrals in the United States in 2021 and 2023, by reason [Graph], Wiley, August 1, 2025. [Online]. Available: /statistics/1204134/blood-donor-deferrals-by-reason-distribution/
