The amount of blood in the human body can be estimated by using the average blood volume range of 7% to 8% of total body weight. This means that blood volume constitutes approximately 0.07 to 0.08 times a person's weight. For example, a 70 kg person would have approximately 4.9 to 5.6 liters of blood. It's important to note that these calculations provide general estimates, and actual blood volume can vary among individuals based on factors such as overall health, hydration status, and specific medical conditions.
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