Abnormally high blood glucose level.

Abnormally high level of glucose in the blood.

An abnormally high amount of sugar in the blood.

An increased concentration of glucose in the blood.

Higher than normal amount of glucose (a type of sugar) in the blood. Hyperglycemia can be a sign of diabetes or other conditions.

Blood glucose, or blood sugar, is the main sugar found in your blood. It is your body's primary source of energy. It comes from the food you eat. Your body breaks down most of that food into glucose and releases it into your bloodstream. When your blood glucose goes up, it signals your pancreas to release insulin. Insulin is a hormone that helps the glucose get into your cells to be used for energy. For people with diabetes, your body doesn't make enough insulin, can't use it as well as it should, or both. Too much glucose stays in your blood and doesn't reach your cells. Hyperglycemia means high blood glucose. It most often affects people who have diabetes. When you have diabetes, your body doesn't make enough insulin or can't use it the right way. Too much glucose stays in your blood and doesn't reach your cells. A key part of managing diabetes is controlling your blood glucose levels. To do this, you need to follow a diabetes meal plan and get regular physical activity. You might also need to take diabetes medicines. You have to balance all of these to keep your blood glucose at the right levels. But if you eat too much food or the wrong foods, don't take your medicines correctly, or don't get physical activity, you can get hyperglycemia. It can also happen if you are stressed or sick. Less commonly, people who don't have diabetes can also get hyperglycemia. It can be caused by conditions that can affect insulin or glucose levels in your blood. They include problems with your pancreas or adrenal glands, certain medicines, and severe illnesses. The symptoms of hyperglycemia include: Feeling thirsty; Feeling tired or weak; Headaches; Urinating (peeing) often; Blurred vision. If you are diabetic and you often have high blood glucose levels or the symptoms of hyperglycemia, talk with your health care team. You may need a change in your diabetes meal plan, physical activity plan, or diabetes medicines. If you don't have diabetes and you are having these symptoms, see your provider to find out the cause and how to treat it. If hyperglycemia is not treated, it can cause other problems. In people with diabetes, long-term hyperglycemia can lead to serious health problems (diabetes complications). If your blood glucose levels get very high, you can develop diabetes-related ketoacidosis (DKA). It happens when your body doesn't have enough insulin to allow blood glucose into your cells for use as energy. Instead, your liver breaks down fat for fuel. This process produces acids called ketones. When too many ketones are produced too fast, they can build up to dangerous levels in your body. This can be life-threatening. The symptoms of DKA may include: Trouble breathing; Nausea or vomiting; Pain in your abdomen (belly); Confusion; Feeling very tired or sleepy. If you have an an at-home test for ketones, check your ketone level every 4 to 6 hours when your blood glucose is very high or when you are having these symptoms. If the test shows that your ketones are moderate or high, or if you don't have a ketones test, contact your health care provider right away or get emergency medical help. If you have diabetes, you'll most likely need to check your blood glucose every day and make sure that it's not too high. You can do this with a blood glucose meter or continuous glucose monitoring (CGM) system. There are also blood tests that providers can use to check if your blood glucose is too high. If you have diabetes and often have high blood glucose, your health care team may make changes to your diabetes meal plan, physical activity plan, and/or diabetes medicines. If you have severe hyperglycemia and are having symptoms of DKA, you will need...

Plasma glucose concentration above the reference range.

A disorder characterized by laboratory test results that indicate an elevation in the concentration of blood sugar. It is usually an indication of diabetes mellitus or glucose intolerance.

Hyperglycemia, elevation of blood glucose concentrations above the normal range; it is the laboratory finding that establishes a diagnosis of diabetes mellitus. Hyperglycemia results from a decrease in the body's ability to utilize or store glucose after carbohydrates are ingested and from an...