These often include drawing blood and collecting
urine or fecal
specimens, cleaning cages, running the blood machine, performing fecal testing to look for parasites, taking radiographs (x-rays), setting up appointments,
giving injections, placing IV catheters, assisting the doctor in the exam room, restraining animals, providing customer service and client education, presenting financial estimates, performing dental cleanings, running anesthesia for surgeries, and many others.
You can drink coffee the morning of, this will
give you some ammunition for the HOS - Home Office
Specimen (
Urine Sample) that they will need.