It isn't his business, and given how fresh the event was in his mind at his point in time, it's be unlikely he'd be willing to share any of the details. Not like this.

Unsurprisingly, he watches Ratchet as he inserts the hypo into his line as the blue-pink fluid was swept up into his system. The other two are pressed in with no struggle from him, and Ratchet will find him to be quiet and tolerable for the rest of that procedure.

He gives Ratchet a curious look as he sits up again, wondering why the doctor suddenly looked so exhausted. But he doesn't say anything, opting to drink the rest of the energon while he prepared a chemical solution.