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If your blood glucose or A1C levels are high, a healthcare professional will likely recommend further testing to confirm a diagnosis of prediabetes or diabetes.
If your glucose blood test result reveals that you have high or low levels of glucose, it doesn’t necessarily mean that you have a medical condition. Other factors, such as certain medications and not fasting, can affect your levels.
People with diabetes use at-home blood sugar testing (using a glucose meter) to monitor their blood sugar and check for hyperglycemia. If you use continuous glucose monitoring (CGM), your device may alert you to high blood sugar.
Hyperglycemia usually doesn't cause symptoms until blood sugar (glucose) levels are high — above 180 to 200 milligrams per deciliter (mg/dL), or 10 to 11.1 millimoles per liter (mmol/L). Symptoms of hyperglycemia develop slowly over several days or weeks.
Hyperglycemia (also called high blood sugar or high blood glucose) is when there's too much glucose (sugar) in your bloodstream, typically because your body isn't making or using insulin as well...
By Mayo Clinic Staff. If you have diabetes, testing your blood sugar levels can be a key part of staying healthy. Blood sugar testing helps many people with diabetes manage the condition and prevent health problems. There are several main ways to test your blood sugar.
A blood glucose test is used to find out if your blood sugar levels are in a healthy range. It is often used to help diagnose and monitor diabetes. Why do I need a blood glucose test? Your health care provider may order a blood glucose test if you have symptoms of high glucose levels or low glucose levels.
Doctors & departments. On this page. Diagnosis. Treatment. Preparing for your appointment. Diagnosis. Your health care provider sets your target blood sugar range. For many people who have diabetes, Mayo Clinic generally recommends the following target blood sugar levels before meals:
Key Takeaways. Hyperglycemia refers to high blood glucose levels. High blood glucose levels occur when the body becomes less effective at using insulin, a hormone that regulates blood sugar. Diagnosis of hyperglycemia is based on blood tests, with regular monitoring providing a clearer picture of blood glucose levels over time.
A blood sugar test measures the level of sugar (glucose) in your blood. Most people with diabetes should test their blood sugar levels regularly. Knowing the results lets you adjust your...