Do people naturally have different volumes of blood or do they all have the same?

Question: Do people naturally have different volumes of blood or do they all have the same?
- Keywords:
  blood,
  body
Asked by emmagrobler to Andrew, Katie, Sadaf on 27 Jun 2013.
- Andrew Swale answered on 27 Jun 2013:
  
  Yes – the amount of blood circulating in our body is dependent upon our weight – usually around 1/11th of our weight equivocates to blood volume
  
  Therefore a man weighing 20 stone would have a considerably larger volume than a man weighing 13 stone

Question: Do people naturally have different volumes of blood or do they all have the same?