when should you check your ketone levels
You may be advised to check for ketones under the following conditions: 1  Your blood glucose is more than 300 mg/dl. 2  You feel nauseated, are vomiting, or have abdominal pain. 3  You are sick (for example, with a cold or flu)  You feel tired all the 1  time. You are thirsty or have a very dry mouth.  Your skin is flushed.