Lean proteins (fish, chicken, etc.) nuts, or a small salad maybe. I know those aren't really breakfast friendly, LOL. Stay away from sugary items, including fruit (they have natural sugars) and starchy foods (bread, pasta, potatoes, etc.) because the body will process it into sugar. These foods can elevate your sugar levels in your blood which may cause your test results to be elevated, although some people don't fast at all and their results come back fine.