Finally got Swee in for the full workup. I know I've posted about the 4 a.m. yowling before, but I wanted to document what the vet actually said regarding her physical health since the noise is getting louder.
The vet ran a standard blood panel and a urinalysis. Nothing came back abnormal. No thyroid issues, no kidney stress, no infection in the urine. She feels healthy on the physical side. So now we are left with the behavioral aspect, which is frustrating when you know the cat is physically fine but still screaming at the wall.
I put the detailed lab numbers in Swee's lab results if anyone wants to see the specific values, but the short version is: she is healthy.