• Question: How much blood can a human lose before dying of blood loss?

    Asked by awkwardrock to Asif, Laura, Lena, Sean, Viv on 16 Mar 2012.
    • Photo: Lena Ciric

      Lena Ciric answered on 16 Mar 2012:

      We have about 5 litres of blood in our bodies. If you lose any more than about 2 litres (like a big bottle of Coke), you’re in big trouble.

    • Photo: Sean Murphy

      Sean Murphy answered on 19 Mar 2012:

      40% or greater is usually considered the maximum amount of blood that an adult can loose before the body can no longer compensate. In an 80 kg adult this would be about 2.24 liters.