"No problem, I'm very excited to see what turns up," Caitlin replies.

That said, she turns around and picks up a folded pair of sweats and a t-shirt, each with S.T.A.R. Labs emblazoned on them, and a sample cup from the counter behind her. Turning back to Yamato, she offers him the clothes and holds out the cup.

"Here, change into these and I need you to urinate in this."

Barry coughs into his hand and then makes an awkward gesture towards the door.

"The uh-- the bathroom's this way, man."