Peter's quiet a moment, thinking about what Tony just told him. Actually, he did think that Banner and Cap didn't ever get sick because of their super metabolism. Didn't that fight off colds and allergies and stuff?

He also thinks about Tony leaving. About the fact that he doesn't have him back home anymore. He was extremely lucky to even get to see Tony again.

"...Okay. I'll. I'll go with you to the hospital." He finally agrees, although he's pretty sure the moment he sees that needle he's going to freak.