So, he didn't eat, he went to the vet, he came home and ate? Oh yeah that sounds about right for a "C - A - T" just drive the humans crazy!

Seriously, prayers from RI that all is well and if anything shows up it is easily treatable. Since he had sub q fluids, that means he was dehydrated, wonder why? But once they get like that, they feel so icky they won't eat.

Do let us know what the results of the testing are!