Question: how often should you test your blood ketones?
Answer: +++ urine ketones Drink more fluids and take a correction dose of rapid insulin. If the level of urine ketones are not dropping after 1 to 2 hours attend A&E as you are at risk of developing diabetes ketoacidosis. You will need to test urine ketones every 1 to 2 hours if blood glucose is above 13.9mmol/L.