Ravi frowns and gives her a wary look because they might be a little back in time, but needles haven't changed that much, at least not in the mechanism, but this his sick-addled mind clears just enough for him to remember that she's not from his time. "What do they use where you come from?" he asks, gesturing to one of the medical kits he'd stolen, where there should still be some disinfectant and a few disposable needles for her to use to draw the blood.

He's not going to like it, but he's used to samples, especially when he uses himself as a non-zombie control for so much of his work back home.