Peter bites down on his lip and closes his eyes tightly shut as he tries prepare himself fro what comes next, a high-pitched, slightly inhuman whine coming from him as he waits. The first prick happens and on instinct he starts to try and pull his hand away.

"Ow." He lets out, jerking slightly. "C-can you-Ouch-ow." He makes the mistake of actually looking at his hand and the needle and pales even more, his face turning a slightly green shade and suddenly he feels a little woozy.

"I'm-I'm-I'm g-gonna sit-sit down now, okay?" Oh wait. He’s already sitting. That’s convenient. He lets out another whimper from the needle poking into his skin before just his forehead rest on Tony’s shoulder while he whines quietly to himself.