Average Quantity of Blood in the Human Body: Canwinn

If you are wondering how much blood in the human body is presented then you must consider reading this article.
The quantity of blood in the human body is commensurate to 7 percent of body weight.

It depends on your weight, and gender that how much amount of blood in your body could be estimated. Like a person whose weight is 150 to 180 pounds will contain approximately 1.2 to 1.5 gallons of blood in his body.
Now, Canwinn is sharing the Average Quantity of Blood in the Human Body.

As per the reports, infants contains 75 milliliters (mL) of blood per kilogram of their body weight. More precisely, if an infant’s weight is 8 pounds, then he will have 270 mL of blood approximately.


A child whose weight is about 80 pounds, will contain approx. 2,650 mL of blood in his body.


An adult with a weight of 150 to 180 pounds will have approx. 4,500 to 5,700 mL blood in his body.

Pregnant women:

The fact is that pregnant women require more blood to strengthen the baby’s growth. Therefore, a pregnant woman contains 30 to 50 percent more blood volume than other normal women. The volume of blood in the human body of pregnants is about 0.3 to 0.4 supplementary gallons of blood.

Not limited to these factors, how much blood in the human body also depends upon where you live.
Because of the high altitudes places, you will not find much oxygen, thus, the people who live there contain more blood.

How much blood loss a normal human body can tolerate?

By losing an excess of blood, your brain might not get enough oxygen to let you live. That is why the people who caught in a serious accident or go through other major injuries and trauma might lose a lot of blood very quickly.

That can even lead to hemorrhagic shock.
Hemorrhagic shock is categorized into four different classes depending on the liters of blood in the human body has been lost. The fourth class depicts that the volume of blood loss can be fatal.

Moreover, if you lose up to 14 percent of your blood from your body it will not affect your blood pressure and heart rate and they will stay close to normal. But if you lose more than that, you will experience:
A rapid heart rate that is higher than 120 beats per minute.

  • Lower blood pressure
  • High breathing rate

When a person loses 30 percent of blood, he will need a blood transfusion. And in case he loses more than 40 percent blood from the body, he will pass out.
A 40% can be about 2,000 mL or 0.53 gallons of blood in the average adult.

If you encounter any situation where you lose blood, visit the hospital immediately.

Why and how would your doctor measure your blood volume?

It is not usual that doctors estimate the volume of blood in your body with a specific processIt can be estimated with the other factors. Moreover, doctors prescribe blood tests called hemoglobin and hematocrit. They both can calculate the liters of blood in the human body with the comparison of the fluid amount in your body. 

Average Quantity of Blood in the Human Body

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