How Much is a Unit of Blood?

How much is a unit of blood? A unit of blood is 450 Ml. That can depend on how tall you are and what your weight is. Most people have 12 units of blood in their body so when you give blood it is not taking all your blood. Besides, it is replenished quickly. The human body is amazing and if you have type O blood, it is very valuable. You can find more information here: .
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