How many units of blood are collected each year?
institutions collected more than 15 million units of whole
blood and red cells in 2001, the most recent year for which
data are available. Blood centers collected 93% of the donated units, while hospitals
much blood is transfused
U.S. hospitals transfused nearly 14 million units of whole
blood and red blood cells to 4.9 million patients in 2001.
The volume of blood transfused is increasing at
the rate of 6% per year.
every unit of blood
collected be used for
Approximately 4% of blood that is collected is autologous
it is set aside for the donors use, should he/she need
it. In addition,
nearly 2% of non-autologous (allogeneic) units are discarded
based on the results of laboratory screening tests.
there other blood products,
in addition to red blood
cells, that are made from
Whole blood may be processed into red cells, platelets,
plasma, and cryoprecipitate. The total number of units of all of these components
transfused in 2001 was 29 million.
the U.S. collect enough
blood to meet its
seasonal and regional
shortages are not uncommon,
an extended, nationwide
shortage of blood has not
been observed in recent
history. However, a shortage
of red blood cells may occur
if transfusion demand
continues to increase and
collections cannot keep
can I obtain more information and statistics from the National
Blood Data Resource Center?
can become an NBDRC member and receive detailed reports.
Soon, NBDRC members will have access to the Members-Only
section on this website (currently under construction).
Click here for more information Membership