Blood testing in dogs and cats isn’t simply a case of ‘more is better’. It can be lifesaving but it can also occasionally bring harm. The decision to do it is by no means as black and white as it seems.
I’m going to use the evidence and my experience to help you decide if blood tests are a good idea for your pet. I’ll start by answering the question: when are blood tests useful? Then I’ll discuss the downsides.