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Testing Your Blood Glucose
Maintaining Your Blood Glucose Meter
Keep your meter clean.
Test your meter regularly with control solution.
Keep extra batteries charged and ready.
Store your meter and supplies properly. Heat and humidity can damage test strips.
Replace the bottle cap promptly after removing a test strip.
Take your meter with you when you visit your doctor so you can compare it with your laboratory results.
Talk with your doctor or call the manufacturer's toll-free phone number if you are having problems with your meter.
Recognizing Low and High Blood Glucose
Some people have recognizable symptoms of low or high blood glucose and some do not. The only reliable way to know when you have low or high blood glucose is to test it.
When your blood glucose is low, you may feel faint, shaky, dizzy, or confused. You may begin to sweat. You may have a headache, sudden behavior change, or seizure.
When your blood glucose is high, your symptoms may be similar to when your blood glucose is low. You may feel dizzy or have a headache. You may also feel thirsty or have an urgent need to urinate.
But many people have no symptoms with low or high blood sugar levels. Other people have symptoms that change over time, so they no longer recognize them. Often, older patients or people who have had diabetes for many years stop having symptoms.
Blood Glucose Meters Are Not Perfect
Although blood glucose meters are generally reliable and help to manage diabetes, they are not perfect. The technology used in blood glucose meters is not as accurate as testing done in a hospital or a doctor’s office.
Your blood glucose meter may give a wrong reading if you are dehydrated, are going into shock, or have a high red blood cell count (hematocrit). Even a very low blood glucose level can cause an incorrect reading.
If you suspect your blood glucose is too low or too high, call your doctor or go to an emergency room immediately… even if your meter shows that everything is fine.
Reporting Problems With Your Glucose Meter
FDA encourages you to report any serious injuries, deaths or malfunctions you experience with medical products. FDA will take action when needed to protect the public’s health.
Report the events to FDA at 1-800-332-1088 and to the product manufacturer.
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