I've been told that at one time or another for one kitty or another, as well. I do consider carefully each step and I don't always do all the testing the vet suggests.

For example, you have the urinalysis and will get the blood work. What will the ultrasound of the kidneys tell you? By the time you have the first 2, you KNOW if her kidneys are working well, sort of, or shut down. What steps will you take based on the info you have from the first 2? And what would change if you get the ultrasound?

Mr. Amber Cat had kidney failure; and a few other things. We did the urinalysis and blood tests, skipped the ultrasound. He went onto sub q fluids when the kidneys were slowing down, and that went from once every three days all the way to 3 times per day over a long period of time. We treated symptoms without getting all the nasty news as there wasn't going to be much we could do about it anyway. He was too weak from the other issues to be able to do any chemo aor radiation so there was no point -- in my opion -- in doing the ultrasound. The vet recommeneded all of it! I just gather the info an make my own decisions.

Wishing you and Luna the best and many happy times together still!