What diagnostic tests might my cat need during an emergency?

Blood work, x-rays, and ultrasound, depending on the condition. With blood work, we may want to look at whether any of the organs are affected, if your cat is anemic, if their red cell count is low, or if they are experiencing a diabetic crisis. There are various problems we can diagnose with blood work, and imaging, such as x-rays or ultrasound help us look internally at what we can't see from the outside, whether that's a trauma that they had that may indicate they have an emergency, such as a broken bone or an issue with their breathing, where they may have something going on in their chest that needs to be addressed immediately.