During an illness such as pneumonia, heart attack, or stroke.When the blood sugar is higher than 240 mg/dL (13.3 mmol/L).Ketone testing may be done to determine if someone with type 1 diabetes has had ketoacidosis. The ketone test is done using a urine sample or blood sample. Hemoglobin A1C (A1C) test - Diabetes is diagnosed if the result of the test is 6.5% or higher.Oral glucose tolerance test - Diabetes is diagnosed if the glucose level is 200 mg/dL (11.1 mmol/L) or higher 2 hours after you drink a special sugar drink.(This must be confirmed with a fasting test.) Random (non-fasting) blood glucose level - You may have diabetes if it is 200 mg/dL (11.1 mmol/L) or higher, and you have symptoms such as increased thirst, urination, and fatigue.Fasting blood glucose level - Diabetes is diagnosed if it is 126 mg/dL (7 mmol/L) or higher two different times.Watch for:Īfter many years, diabetes can lead to serious health problems, and as a result, many other symptoms.ĭiabetes is diagnosed with the following blood tests: Symptoms usually appear when a person's blood sugar level falls below 70 milligrams per deciliter (mg/dL), or 3.9 mmol/L. Low blood sugar ( hypoglycemia) can develop quickly in people with diabetes who are taking insulin. Nausea and vomiting inability to keep down fluids.Or, they may happen when blood sugar is very high ( diabetic ketoacidosis): Urinating more often (including urinating at night or bedwetting in children who were dry overnight before)įor other people, these serious warning symptoms may be the first signs of type 1 diabetes.Losing weight despite an increased appetite.Feeling numbness or tingling in your feet.Or, they may occur when blood sugar is high. The following symptoms may be the first signs of type 1 diabetes. The tendency to develop autoimmune diseases, including type 1 diabetes, can be inherited from your parents. With type 1 diabetes, an infection or another trigger causes the body to mistakenly attack the beta cells in the pancreas that make insulin. This is a condition that occurs when the immune system mistakenly attacks and destroys healthy body tissue. Most likely, it is an autoimmune disorder. The exact cause of type 1 diabetes is unknown. This leads to the symptoms of type 1 diabetes. The body is unable to use the glucose for energy. This buildup of glucose in the blood is called hyperglycemia. Without enough insulin, glucose builds up in the bloodstream instead of going into the cells. With type 1 diabetes, beta cells produce little or no insulin. Inside the cells, glucose is stored and later used for energy. Insulin is needed to move blood sugar (glucose) into cells. The pancreas is below and behind the stomach. Insulin is a hormone produced in the pancreas by special cells, called beta cells. It is most often diagnosed in children, adolescents, or young adults.
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