He does give it, but perhaps not in the most polite of ways. Behind him still, Severus conjures a small card - his name and CiD number written on it in slanted handwriting - and sticks it in the bag he cleaned a moment ago. Then he leaves the room, walking with one hand out as he passes, and any gore and grime left from blood or sickness vanishes.

In his wake, there's a number of useful odds and ends left with Vanessza, ranging from hyper-effective bandages to topical painkillers to ever-smoking potions in glass jars meant to revive anyone who drinks it. But as he's not participating in the triage itself, that's about as much help as he's going to be, and lingering any longer will just put him underfoot. Outside the apartment, he turns on his heel and disappears, off to investigate the situation from some other angle - or perhaps, merely return home.