Understanding Your Test Results
Expected Blood Glucose Values
Blood glucose values will vary from time to time depending on food intake, medication dosages, health, stress or exercise. Consult your physician or healthcare professional for the target glucose values appropriate for you. Standard medical practice goals for a typical
•Before a meal: 90 to 130 mg/dL
•2 hours after a meal: less than 180 mg/dL
Symptoms of High or Low Blood Glucose
You can better understand your test results by being aware of the symptoms of high or low blood glucose; this will also help you decide what to do if your results seem unusual. Some of the most common symptoms are:2
High blood glucose (hyperglycemia): frequent urination, excessive thirst, blurred vision, increased fatigue, extreme hunger, and irritability.
Ketones (ketoacidosis) from untreated hyperglycemia: shortness of breath, nausea and vomiting, very dry mouth.
Low blood glucose (hypoglycemia): shakiness, sweating, fast heartbeat, blurred vision, strange behavior, confusion, passing out, and seizure.
If you are experiencing any of these symptoms, test your blood glucose. If your result is below 50 mg/dL or above 250 mg/dL, or is displayed as “LO“ or “HI,” contact your doctor immediately.
1American Diabetes Association: Standards of Medical Care for Patients With
Diabetes Mellitus (Position Statement). Diabetes Care 29 (Suppl. 1): S10; 2006.
2For additional information and symptoms, refer to the website for the American Diabetes Association: www.diabetes.org
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