Every
2 seconds, someone in the United States needs blood.
25%
of blood products are used to treat cancer patients.
A single
shock-trauma victim can use 100 units of blood components in just
a few hours.
Approximately
4 million patients receive a blood transfusion each year.
The
approximate distribution of blood types in the U.S. population
is*:
| O+ |
38% |
| O- |
7% |
| A+ |
34% |
| A- |
6% |
| B+ |
9% |
| B- |
2% |
| AB+ |
3% |
| AB- |
1% |
* Distribution
may be different for specific racial and ethnic groups
76%
of Americans expect that blood will be available to them when
they need it; however, less than 5 percent of the population eligible
to give blood actually does so (according to a survey conducted
by the American Red Cross).
97%
of the population will receive a blood transfusion by the age
of 75.
The
Red Cross only collects blood from voluntary donors.
The
four main blood types are: A, B, AB and O, positive or negative
One
pint of blood can be separated into three components: red cells,
platelets and plasma.
Blood
is perishable; red blood cells must be used within 42 days. Platelets
must be used within 5 days.
The
average adult body contains approximately 10-12 pints of blood.