Blood tests are an easy, safe, and relatively inexpensive way to peer inside your pets and find potential health problems. Analysis of the numbers and structure of blood cells is important in the diagnosis and monitoring of disease and infection. These tests can help us identify a problem before clinical signs or symptoms appear. But what exactly are we looking for when we do a blood draw on dogs and cats?

You startle awake in the middle of the night to a familiar hacking sound. It’s your cat, expelling a hairball again—or is it?