Can anyone tell me why I would have glucose and ketones in my urine? My fasting blood test has come back hbc1 37 apparantly antibiotics I'm permanently taken can cause blood sugar problems. My Dr says I don't need a glucose tolerance test but as all my family diabetic should I ask for one? This is 3rd time I've had glucose and ketones it comes up when i do a urine test at the hospital for Cuti I'm suffering with.