A blood donor gives a "pint" of blood
Truth
People often speak of donating “pints of blood”. This is surprising when the medical
profession speaks of litres. In fact the “unit of blood” is 470 ml.
The unit of blood is much closer to half a litre (500 ml) than the imperial pint
(568 ml). The imperial pint is about 21% bigger than the unit of blood.
Whilst we're on the subject you may like to consider donating blood. Please visit the
National Blood Service web site for more information.
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