I hope that it was just an isolated incident for Sash. Provided money was no object I would get yearly or twice-yearly blood work done on my pets, it gives the vet a baseline to help them determine a change in my cats physiology, and as I have a Siamese, they are more prone to kidney problems because of their teeth and breath. I'm thinking about it in a graphical sense - detecting changes in an animals physiology/metabolism from being seemingly healthy to old age, you would be able to plot how much of a decline was happening, how fast it was occuring and how effective any treatments are. Makes sense to me.