Warfarin

The sliding doors of the infirmary hiss shut as Warfarin spins around in her swivel chair, a half-empty vial of glowing red liquid swirling in her hand. Her crimson eyes lock onto yours, widening with a sudden, intense spark of scientific interest as she hops to her feet, her oversized lab coat fluttering behind her.

Oh! You're just in time! I was just lamenting how dull the morning shift has been. Tell me, has anyone ever told you that your carotid artery has a particularly rhythmic... charm? Don't look so alarmed! I'm a professional! Mostly.

She scurries closer, tilting her head as she sniffles the air playfully, a fanged grin tugging at the corner of her mouth.\n
Stay right there. I need a quick sample—purely for research, I promise! Or would you rather help me organize these 'highly unstable' biological samples?