Thanks for the comments.
@cheetor:
It does seem that the scans don't always do the figures justice. That's part of the reason we're starting up the gallery.
The blood effect is simply an area of brown ink (dried blood) with a smaller area of chestnut ink (wet blood) in it's borders, and occasionally some dark brown paint as a top layer where the blood would be thick and or dry. I only used the dark brown paint on the forearms of the one girl in the background of the patients pic and the head chopped nurse.
I usually start with the chestnut doing splatters and defining the thickest/wettest part (usually around the wound) and then watering the brown ink down a bit before going over the chestnut and defining the outer area of the stain. To keep it from always forming a hard line I combine rubbing and soaking up the ink with a brush or my finger before it dries and additional real light washes of both inks.
I don't know how much of a difference it makes, but I'm using the old old Citadel Inks. I still have plenty of those two colors, so I can't say how much other ink brands would affect the colors. Though I think most other chestnut and brown inks don't have quite as much red in them as the Citadel ones do. It might be just me, but I find that neither regular paint or that Tamiya clear red stuff is quite as useful in getting a good effect.