I am scheduled for a PET/CT this Friday at 8AM, so tomorrow, Thursday, I will eat only protein (eggs, meat, tuna) and veggies like
green beans, cauliflower, broccoli, salad with oil/vinegar (no prepared salad dressings). I work for oncologists and the girl that schedules these tests for our office gave me a list with all of the things to avoid. You will need to drink lots of water in the hours before your test. Hydration is very important.