The red blood cells are measured, screening for diseases such as anemia. The test also looks at the dog's white blood cells, which can show possible disease immune system issues. Platelets are also looked at, these are the cells responsible for blood clotting. They are counted to make sure that there are enough.
Chemistry Profile -This blood test looks at the Beagle's liver and kidney function. Blood glucose level is evaluated, to screen for diabetes, which is a common health issue for the senior Beagles.
Heartworm Antigen Test -This very accurate blood test acts to ensure the effectiveness of the heartworm prevention medication. This is because after being given treatment for almost a decade, a dog can build up immunity to certain medications. Your vet may find that there is a need to switch to a new brand that will work better.
Fecal Flotation - You will be asked to bring in a stool sample for evaluation. This is used to look for intestinal parasites which the older Beagle is more susceptible to.
Urinalysis - You should be asked to bring in a urine sample from your Beagle. As it is usually done with humans, your dog's vet should want a sample of the 1st urine of the morning. This will be evaluated to check for any kidney issues. As a side note, it is much easier to collect a sample first thing in the morning, because a dog's bladder will be full and he/she will be less likely to be skittish when you collect the urine. The vet will give you a sterilized container; once there is a steady stream, calmly approach from the back (female) or side (male) and hold it under the stream.
X-Rays - X-rays of the chest allow evaluation of the heart, lungs, and membranes lining the thoracic cavity. The size of the heart and its chambers is assessed. The lungs are screened for normal aging changes.