If your blood sugar is 288 of a blood sugar you might want to consult a doctor of this... if you are not aware of a diagnosis of diabetes. If you have diabetes and are experiencing this blood sugar, it may just be from to many carbs and not enough insulin. If you are experiencing many of this readings consistantly, and you are aware you have diabetes, you may want to test for keytones. A easy way to test this is with Ketostix. I hope this helps with your problem.