Symptoms of High or Low Blood Sugar
Being aware of the symptoms of high or low blood sugar can help you understand your test results and
decide what to do if they seem unusual. Here are some common symptoms:
High blood sugar (hyperglycemia): increased fatigue, increased appetite or increased thirst, frequent
urination, blurred vision, headache, general aching, or vomiting.
Low blood sugar (hypoglycemia): sweating, trembling, blurred vision, rapid heartbeat, tingling, or numbness
around mouth or fingertips.
If you are experiencing any of these symptoms, or other unusual symptoms, test your blood sugar. If
your blood sugar result is displayed as LO or HI and you have symptoms of low or high blood sugar,
follow your doctor's instructions or contact your doctor immediately. If your blood sugar result does
not match how you feel, follow the steps under "Unusual Test Results."
The meter is designed to provide a numerical value for blood glucose in the range of
10-600 mg/dL. If you receive a numerical value below 10 mg/dL or over 600 mg/dL and it
does not match how you feel, call the ACCU-CHEK Customer Care Service Center toll-free
at 1-800-858-8072.
Chapter 3: Testing Your Blood Sugar
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