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When your blood sugar is at or over 400 mg/dL (22.2 mmol/L) you need to stay calm! Your first step is to wash your hands and use your blood glucose monitor to re-check and verify the result. If your second reading is still high, call your doctor for further instructions.
1. Fasting plasma glucose (FPG) test. This test measures your blood sugar levels after an overnight fast (not eating for at least 8 hours). The results are typically given in milligrams per...
High blood sugar, also called hyperglycemia, affects people who have diabetes. Several factors can play a role in hyperglycemia in people with diabetes. They include food and physical activity, illness, and medications not related to diabetes.
Learn what to do if your blood sugar is over 400 mg/dL. Find tips for managing high blood sugar and when to see your doctor about hyperglycemia symptoms.
Hyperglycemia is when your blood sugar spikes too high, while hypoglycemia means your blood sugar level is lower than normal. What Causes High Blood Sugar?
Check your blood sugar as often as your health care provider recommends. If you have any symptoms of severe hyperglycemia — even if they seem minor — check your blood sugar level right away. If your blood sugar level is 240 mg/dL (13.3 mmol/L) or above, use an over-the-counter urine ketones test kit.
This article will cover when high and low blood sugars are dangerous, what to do immediately, the risks and causes of extreme blood sugars, and when a trip to the hospital for yourself or someone else is warranted.