[gurps] re:How much blood?

[Matthew Ludivico]

I think the answer that the average human has 10 HP due to 10 ST on average fits with how the Bleeding rules  fits with a common sense check on hemmorhaging (supplied by Wikipedia, "Bleeding" under 'Types of Bleeding').  And a vamp regenerates 1 HP by sucking 1 HP from a victim, 1x and no other rate.
 
 
Why I think this...
 
Comparing the bleeding rules to the Wikipedia article on bleeding, as a reality check:
A -1 HP due to bleeding = a 'light' real world hemorrhaging such as a blood donation at 10% blood loss, assuming average person of 10 HP is involved.
 
A -3 HP due to bleeding for a critical failure = the more serious type of hemmorhaging that not only has symptoms (sequella---fainting, dizziness, etc..) but also is about on the borderline as to if the patient needs a blood transfusion.  ~30% blood loss.
 
At -4 HP, ~40%, or a little more to -5HP (50% blood loss), except them to need multiple blood transfusions an medical treatment to survive.
 
So even though all your blood is not all that comprises your health, it does parallel your health closely at a 1x rate on average. 5XHP may be instant death but arguably some of that is modeling system shock, and represents abrupt change and what medical help can reasonably revive, not some kind of meta-hit points.  
 
For an example, a bleeding patient in an ER with a huge supply of blood and expert help might bleed 5xHP over an hour or so, but still hover at the 0 HP mark the whole time, and therefore not really die.  They only have 10 HP from the transfusions if they ever heal.  They won't heal to 5x10=50 HP just because it may have taken 5x their natural blood capacity to keep them alive during their medical treatment.
_________________________________________________________________
Going green? See the top 12 foods to eat organic.
http://green.msn.com/galleries/photos/photos.aspx?gid=164&ocid=T003MSN51N1653A