I'm pretty sure it is several tablespoons, but it really varies by person.
This varies from woman to woman. The average blood loss during menstruation is 35 milliliters with 10-80 ml considered normal.
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A child is about 1/3 the body size of an adult, therefore they'll have about 1/3 the amount of blood. This means that a child will have between 2.7-3.6 pints of blood or 1.3-1.7 liters of blood.
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