For the purpose of this question, I'm going to strictly stick to using "vitae" to mean vampiric blood, like a vampire has in its blood pool, and "blood" to mean ordinary human blood.
If a Ghoul character manages to capture a vampire NPC and decides to drain him of vitae, how much do they get?
I think it would be the amount of vitae in the vampire's blood pool, but I'm wondering if a vampire has extra vitae in its veins that can be extracted.
The reasoning is as follows - Ghouls apparently contain 10 blood and 2 vitae (for a ghoul with a typical blood pool) because they need their human blood to be alive but can store vitae as well (somehow). So do vampires contain extra blood and/or vitae to allow them to function?
Phrased another way:
Is there a minimum amount of blood or vitae in a vampire's veins simply to allow them to function? Or are they 'dry' inside (unless they've spent vitae to 'appear human')?