Acetone

You should get an acetone test if you have diabetes with blood sugar above 250 mg/dL, or symptoms like nausea, vomiting, abdominal pain, fruity-smelling breath, rapid breathing, extreme thirst, or confusion. It is also recommended during illness or infection in diabetes, prolonged vomiting or fasting, and severe morning sickness. Severe symptoms need emergency care.

No fasting is required for an acetone test; in fact, prolonged fasting can raise ketones and affect results. For a urine test, collect a fresh, clean midstream sample, which should be tested promptly. Inform your doctor about your diet (such as a ketogenic diet) and medicines, especially insulin or SGLT2 inhibitors like dapagliflozin.

No, fasting is not required for an acetone test. In fact, prolonged fasting can increase ketone levels and may lead to misleading results. You can eat and drink normally. If you have diabetes and feel unwell, don’t delay testing, as high ketones may need urgent treatment.