If there was only a few drops, then that sounds like it might be the case.

Do we want to check to see if anyone has any recent cuts on their hands? It couldn't hurt, at least.

[He's already pulling off his gloves to show that, well. They are cut, but none of the cuts are fresh. There are some scrapes and scratches from working, bruises from accidentally hammering his thumb, maybe an old burn scar or two.]