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Current FDA guidelines allow the collection of 10.5 mL per kilogram body weight of whole blood from volunteer blood donors. The majority of blood collection facilities in the United States use 500 mL whole blood collection sets, with an additional 50 mL allowed for required donor testing.

Sources:

FDA.gov; AABB.org

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Wiki User

13y ago
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Wiki User

14y ago

Blood banks usually want at least a pint. I don't think they will take more.

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Wiki User

13y ago

Only 350 ml of blood is taken at the time of donation. An average person has 5-6 litres of blood in the body.

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Wiki User

13y ago

Blood donors usually contribute a unit of blood (500 mL) in a session.

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Wiki User

12y ago

Blood donors usually contribute a unit of blood (500 mL) in a session.

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Wiki User

14y ago

It is usually a pint of blood.

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Anonymous

Lvl 1
3y ago

One pint

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Q: How much blood is drawn when donating?
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