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,
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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 in
Chapter 3, "Unusual Test Results."
The meter is designed to display blood sugar results from 10 to 600 mg/dL.
If a result below 10 mg/dL or over 600 mg/dL appears on the display, call
the ACCU-CHEK Customer Care Service Center toll-free at 1-800-858-8072.