"Ummmm...keeping in mind that I don't tend to deal with people while they're still breathing, I'd say maybe a pint or two?" she hazarded. "Enough that she was turning pale and sort of zoning out."

She grabbed a couple banana bags (yeah, she'd been in the clinic a few times, even if she was technically a lab person) and then pointed out something that had just occurred to her.

"If you need to transfuse her for some reason, I'm O negative and clean."