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It varies, and each part of the blood is taken care of separately.

On average red blood cells are replaced about 1% per day,

platelets about 10% per day

The water part is "replaced" at about 10% per minute. (the water is mostly the same molecules, but it's been separated, "cleaned" and replaced [by the kidneys]).

Note that the rate of replacement can increase dramatically with blood loss.

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Wiki User

11y ago
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Wiki User

13y ago

Your body had five liters of blood, and your body will produce how ever much it needs to make five liters. if you loose none then you make none.

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Anonymous

Lvl 1
3y ago
All due respect, this doesn't answer the question fully "How much blood does a body produce in a day.  So how much blood can the body produce in a day if you are one pint low?  The Red Cross make one wait 8 weeks before you can donate again.

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Wiki User

12y ago

In my body, its more busy producing sperm cells, but I'd say approximately one quart every 2days if needed.

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Wiki User

13y ago

The human body doesnt "make" blood...

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