What is high blood glucose (sugar)?

High blood glucose, or high blood sugar, is called hyperglycemia. It is when your blood glucose is above 180 mg/dL. 

Your blood glucose might be high if you:

• feel thirsty

• pee often

• have dry skin or dry mouth

• feel fatigued (tired) 

• are nauseous

• have blurry vision

If you think your blood glucose level is too high, use a blood glucose meter to check it.